JP7003438B2 - Molten steel production control equipment, molten steel production control method and molten steel production control system - Google Patents

Description

The present invention relates to a molten steel production control device, a molten steel production control method, and a molten steel production control system.

In Patent Document 1, regarding the steel output frame arrangement planning device, "an input means for taking in information on order information of manufactured products, process processing occurrence probability for each manufactured product, and planning policy, an order database storage means, and manufactured products". The steel output frame layout plan and the steel output frame layout plan by minimizing or maximizing the model storage means, the order matrix creation means, the planning policy setting means for setting the planning policy parameters, and the evaluation functions related to delivery delay, product inventory, and steel output lot expansion. An optimization calculation means for calculating the allocation quota for each manufacturing type, a steel output plan planning result display means, and a steel output plan planning result registration means are used to formulate a steel output frame layout plan. "

Japanese Unexamined Patent Publication No. 2008-293475

The steel output frame layout planning device described in Patent Document 1 is a device for knitting molten steel based only on the delivery date, the delivery date required for the next process, and the number of days required for the next process. Therefore, the molten steel knitting produced by the device is heavily weighted toward delivery time, and it is not possible to perform molten steel knitting in consideration of evaluation indexes such as molten steel weight and manufacturing yield.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a molten steel production control device capable of performing more optimal molten steel knitting in consideration of various evaluation indexes related to molten steel production.

The present application includes a plurality of means for solving at least a part of the above problems, and examples thereof are as follows. The molten steel production management device according to one aspect of the present invention that solves the above problems specifies the required quantity for each shape type of steel ingot for which the desired melting date is set within the target period until the predetermined knitting confirmation date. A molten steel knitting unit for performing molten steel knitting that satisfies the desired melting date and the required quantity by combining a predetermined ingot pattern that defines the shape type and the quantity of the ingot manufactured from one molten steel is provided. The molten steel knitting section identifies the ingot pattern that satisfies the required quantity of the ingot related to the shape type to be manufactured in the order of the desired melting date, and the ingot pattern of the ingot related to the shape type using the ingot pattern. The quantity obtained by subtracting the required quantity from the production quantity and the production quantity of the ingot related to the shape type other than the shape type simultaneously manufactured using the ingot pattern are the remainder steel ingots related to each shape type. When the result of the molten steel knitting as the quantity of is registered and the ingot related to the shape type to be manufactured is registered as the surplus ingot in specifying the ingot pattern, the quantity of the surplus ingot The required quantity is calculated by subtracting the required quantity of the ingot related to the shape type from, and the ingot pattern satisfying the calculated required quantity is specified. For each result of the molten steel knitting as per the street, a value of a predetermined evaluation index and a comprehensive evaluation value using the value of the evaluation index are calculated.

According to the molten steel production control apparatus according to the present invention, more optimal molten steel knitting can be performed in consideration of various evaluation indexes related to molten steel production.

It is a functional block diagram which showed an example of the functional structure of the molten steel production control apparatus which concerns on 1st Embodiment of this invention. It is a figure which showed an example of order information which concerns on 1st Embodiment of this invention. It is a figure which showed an example of the sales plan information which concerns on 1st Embodiment of this invention. It is a figure which showed an example of the order record information which concerns on the 1st Embodiment of this invention. It is a figure which showed an example of the disposal cost information which concerns on the 1st Embodiment of this invention. It is a figure which showed an example of the disposal cost expected value information which concerns on the 1st Embodiment of this invention. It is a figure which showed an example of the steel ingot pattern information which concerns on 1st Embodiment of this invention. It is a figure which showed an example of the organization fixed date information which concerns on the 1st Embodiment of this invention. It is a figure which showed an example of the evaluation index information which concerns on the 1st Embodiment of this invention. It is a figure which showed an example of the hardware composition of the molten steel production control apparatus which concerns on 1st Embodiment of this invention. It is a flow figure which showed an example of the molten steel knitting process which concerns on 1st Embodiment of this invention. It is a figure which showed an example of the demand distribution of one steel ingot which concerns on 1st Embodiment of this invention. It is a figure which showed an example of the steel ingot order information which concerns on 1st Embodiment of this invention. It is a figure which showed an example of the molten steel knitting information which concerns on 1st Embodiment of this invention. It is a figure which showed an example of the order information which concerns on the 2nd Embodiment of this invention. It is a figure which showed the evaluation index information which concerns on the 2nd Embodiment of this invention. It is a figure which showed an example of the organization fixed date information which concerns on the 3rd Embodiment of this invention. It is a flow figure which showed an example of the molten steel knitting process which concerns on 3rd Embodiment of this invention. It is a functional block diagram which showed an example of the functional structure of the molten steel production control apparatus and the sales support system which the molten steel production control system which concerns on 4th Embodiment of this invention has. It is a figure which showed an example of the surplus steel ingot information which concerns on 4th Embodiment of this invention. It is a figure which showed an example of the business information which concerns on the 4th Embodiment of this invention.

Hereinafter, the molten steel production control apparatus according to a plurality of embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
In the steelmaking process in the steel industry, the material is melted in a melting furnace to produce molten steel. The produced molten steel is subjected to component adjustment by secondary refining as necessary, and then poured from a refining furnace into a steel ingot case installed on a surface plate. There are a plurality of types of ingot cases having different shapes, and by changing the ingot case, steel ingots having different shapes are manufactured.

The molten steel solidified in the ingot case is produced by pulling out the hot water portion with a crane or the like. By such a steelmaking process, a plurality of ingots of a plurality of shape types (for example, several to several tens) are produced from one molten steel. The manufactured steel ingot moves to a predetermined destination and becomes a product through processes such as rolling and cutting.

Here, determining what kind of ingot the molten steel, which is the manufacturing unit, is composed is called molten steel knitting. In molten steel knitting, efficient manufacturing cannot be performed unless various events in the steelmaking process are taken into consideration, resulting in loss.

For example, if the variation in the desired melting date of each ingot in the same molten steel becomes large, the material replacement work occurs during the manufacturing of the product, and the workability is deteriorated. Further, if only a predetermined destination is crowded, the work in process increases due to the concentration of load, and the processing such as rolling becomes delayed. In addition, extra steel ingots may be manufactured in anticipation of future orders, but if the order is not expected and the target steel ingot cannot be ordered, the manufactured steel ingots will be discarded. The material cost and manufacturing cost will be a loss.

The molten steel production control device according to the present embodiment uses predetermined information such as order information and sales plan information to vary in the desired melting date in the same molten steel, and the disposal cost which is the product of the disposal rate of the ingot and the disposal loss. Optimal molten steel knitting is performed using the expected value, the level of each destination, the degree of integration of the batch process, the number of molten steel, etc. as evaluation indexes.

FIG. 1 is a functional block diagram showing an example of the functional configuration of the molten steel production control device 100 according to the present embodiment. The molten steel production control device 100 is an device that manages the production of molten steel, and performs molten steel knitting as one function. Specifically, the molten steel production control device 100 generates molten steel knitting information indicating the composition of a steel ingot produced from the molten steel as a manufacturing unit by the molten steel knitting process. Details of the molten steel knitting process will be described later.

As shown in the figure, the molten steel production control device 100 includes a calculation unit 101, a storage unit 102, and a communication unit 103. The calculation unit 101 includes an input reception unit 111, an output processing unit 112, and a molten steel knitting unit 113.

The input receiving unit 111 is a functional unit that receives various instruction inputs from the knitting person who is the user of the molten steel production control device 100. Specifically, the input receiving unit 111 inputs predetermined information such as an arithmetic expression for calculating the value of the evaluation index, a weighted value of the evaluation index, a knitting confirmation date indicating the target period of molten steel knitting, and a molten steel knitting process. The execution instruction of is accepted from the person in charge of organizing.

The output processing unit 112 is a functional unit that generates screen information constituting the display screen. Specifically, the output processing unit 112 generates predetermined screen information (for example, an input screen of predetermined information, a molten steel knitting result, etc.) that is required to be displayed on the display of the molten steel production control device 100, and generates the predetermined screen information. Show on the display.

The molten steel knitting unit 113 is a functional unit that performs molten steel knitting. Specifically, the molten steel knitting unit 113 performs molten steel knitting for the period from the present to the formation confirmation date by executing the molten steel knitting process. Further, the molten steel knitting unit 113 generates molten steel knitting information indicating the composition of the ingot produced from the molten steel of the manufacturing unit as a result of the molten steel knitting. Details of the molten steel knitting information will be described later.

The storage unit 102 is a functional unit that stores various information. Specifically, the storage unit 102 confirms the organization of the order information 121, the sales plan information 122, the order record information 123, the disposal cost information 124, the disposal cost expected value information 125, and the steel ingot pattern information 126. It has daily information 127 and evaluation index information 128.

FIG. 2 is a diagram showing an example of order information 121. The order information 121 is information about the ordered steel ingot. Specifically, the order information 121 includes a steel ingot ID 121a, a component ID 121b, a steel ingot shape 121c, a destination 121d, a batch process 121e, a melting request date 121f, a steel ingot weight 121g, and a quantity 121h. Has an associated record.

The steel ingot ID121a is information for identifying the ordered steel ingot. The component ID 121b is information for identifying the components of the associated steel ingot. The steel ingot shape 121c is information for specifying the shape of the ordered steel ingot, and is represented by, for example, a predetermined identification number. The destination 121d is information for identifying a processing area (or machine tool) for rolling or cutting. The batch process 121e is information for specifying a processing process such as heat-treating the manufactured steel ingot, and is represented by, for example, a predetermined identification number. The melting request date 121f is information indicating the melting request date of the molten steel for producing the corresponding ingot. The steel ingot weight 121 g is information indicating the weight of the associated steel ingot. The quantity 121h is information indicating the quantity ordered.

The order information 121 is stored in the storage unit 102 in advance and is used for the molten steel knitting process.

FIG. 3 is a diagram showing an example of the sales plan information 122. The sales plan information 122 is information indicating a sales plan of the steel ingot. Specifically, the sales plan information 122 includes a steel ingot ID 122a, a component ID 122b, a steel ingot shape 122c, a destination 122d, a batch process 122e, an order accuracy 122f, a melting request date 122g, and a steel ingot weight. It has a record in which 122h and the quantity 122i are associated with each other. Here, the order probability 122f is information indicating the order probability of the associated steel ingot. The ingot ID 122a, the component ID 122b, the ingot shape 122c, the destination 122d, the batch process 122e, the requested melting date 122g, the ingot weight 122h, and the quantity 122i are the above-mentioned order information 121. Since they are the same, the description thereof will be omitted.

The sales plan information 122 is stored in the storage unit 102 in advance and is used for the molten steel knitting process.

FIG. 4 is a diagram showing an example of order record information 123. The order record information 123 is information regarding the past order record of the steel ingot. Specifically, the order record information 123 has a record in which the component ID 123a, the ingot shape 123b, the order date 123c, and the quantity 123d are associated with each other. Here, the order date 123c is information indicating the past order date of the associated steel ingot. The quantity 123d is information indicating the number of orders received on the associated order date. Since the component ID 123a and the steel ingot shape 123b are the same as the above-mentioned order information 121, the description thereof will be omitted.

The order record information 123 is stored in the storage unit 102 in advance and is used for the molten steel knitting process.

FIG. 5 is a diagram showing an example of the disposal cost information 124. The disposal cost information 124 is information indicating the disposal cost for each shape type of the ingot. Specifically, the disposal cost information 124 has a record in which the component ID 124a, the ingot shape 124b, and the disposal cost 124c are associated with each other. Here, the disposal cost 124c is information indicating the disposal cost for each shape type of the ingot. Since the component ID 124a and the ingot shape 124b are the same as the above-mentioned order information 121, the description thereof will be omitted.

The disposal cost information 124 is stored in the storage unit 102 in advance and is used for the molten steel knitting process.

FIG. 6 is a diagram showing an example of the expected disposal cost value information 125. The expected disposal cost information 125 is information indicating the expected disposal cost value, which is the product of the disposal rate of the ingot and the disposal cost. Specifically, the expected disposal cost value information 125 has a record in which the component ID 125a, the ingot shape 125b, the quantity 125c, and the expected disposal cost value 125d are associated with each other. Since the component ID 125a and the ingot shape 125b are the same as the above-mentioned order information 121, the description thereof will be omitted.

The quantity 125c is information indicating the quantity of steel ingots to be discarded. The expected disposal cost value 125d is information indicating an expected value of disposal cost when the associated quantity of steel ingots is discarded. The calculation of the expected disposal cost will be described later.

The expected disposal cost information 125 is generated by the molten steel knitting process and stored in the storage unit 102.

FIG. 7 is a diagram showing an example of steel ingot pattern information 126. The ingot pattern information 126 is information indicating an ingot pattern or the like generated from one molten steel. Specifically, the steel ingot pattern information 126 is generated for each component ID, and the pattern No. 126a, the molten steel weight 126b, the furnace 126c, the additional work 126d, the yield rate 126e, and the quantity 126f according to the ingot shape are included. It has an associated record.

Pattern No126a is information for identifying a steel ingot pattern. The molten steel weight 126b is information indicating the total weight of each ingot generated by the associated ingot pattern. The furnace 126c is information indicating a melting furnace of molten steel to be injected into each ingot case of the associated ingot pattern. The additional work 126d is information indicating the presence or absence of work other than the standard work, and is indicated by 1 when there is additional work and 0 when there is no additional work. In addition, the work other than the standard work may be, for example, a movement between the surface plates may occur when the surface plates are separated from each other. The yield rate 126e is information indicating the yield rate. The yield is the ratio of the product production amount actually obtained to the production amount expected from the input amount of raw materials. The quantity 126f for each ingot shape is information indicating the production quantity for each ingot shape.

The steel ingot pattern information 126 is stored in the storage unit 102 in advance and is used for the molten steel knitting process.

FIG. 8 is a diagram showing an example of organization confirmation date information 127. The knitting fixed date information 127 is information indicating the target period of the molten steel knitting. Specifically, the last day of the formation period including all the desired dissolution request dates from the present is registered in the formation confirmation date 127a of the formation confirmation date information 127.

The knitting fixed date information 127 is generated by the molten steel knitting unit 113 and stored in the storage unit 102 when the input information regarding the desired knitting fixed date is received from the knitting person in charge.

FIG. 9 is a diagram showing an example of the evaluation index information 128. The evaluation index information 128 is information regarding the evaluation index of the molten steel knitting. Specifically, the evaluation index information 128 has a record in which the evaluation index 128a and the weighting value 128b are associated with each other.

The evaluation index 128a is information indicating each evaluation index of the molten steel knitting. The evaluation index 128a includes, for example, the weight of molten steel, the number of molten steel in the m furnace, the expected value of disposal cost, the leveling of the destination a, the degree of aggregation of the batch process b, the additional work, the yield, and the variation in the desired date for melting the ingot. The weighted value 128b is information indicating the weighted value of the associated evaluation index.

The evaluation index information 128 is generated by the molten steel knitting unit 113 and stored in the storage unit 102 when the input receiving unit 111 receives input information of a desired weighted value for each evaluation index from the knitting person.

It will be described back to FIG. The communication unit 103 is a functional unit that performs information communication with an external device. For example, the communication unit 103 transmits the generated molten steel knitting to a predetermined external device such as a production planning system.

The example of the functional configuration of the molten steel production control apparatus 100 has been described above.

FIG. 10 is a diagram showing an example of the hardware configuration of the molten steel production control device 100. The molten steel production control device 100 is realized by an information processing device such as a general-purpose computer or a workstation called a personal computer or a mainframe, for example.

As shown in the figure, the molten steel production management device 100 electrically connects the input device 201, the output device 202, the external storage device 203, the arithmetic unit 204, the main storage device 205, and the communication device 206 with each other. It has a bus 207 to be connected.

The input device 201 is a pointing device such as a keyboard, a mouse, or a touch panel, or a microphone which is a voice input device. The output device 202 is a display, a printer, a speaker that is an audio output device, or the like. The external storage device 203 is a non-volatile storage device such as a so-called HDD, SSD (Solid State Drive), or flash memory that can store digital information.

The arithmetic unit 204 is a central unit that performs various processes of the molten steel production control unit 100. The arithmetic unit 204 performs molten steel knitting for the period until the knitting finalization date, and generates molten steel knitting information indicating the composition of the ingot produced from the molten steel of the manufacturing unit.

Such an arithmetic unit 204 is composed of, for example, a CPU. The main storage device 205 is a memory device such as a RAM or a ROM. The communication device 206 is a communication module or the like for performing information communication with an external device.

The example of the hardware configuration of the molten steel production control apparatus 100 has been described above.

The arithmetic unit 101 of the molten steel production control apparatus 100 is realized by a program that causes the CPU of the arithmetic unit 204 to perform processing. These programs are stored in the ROM of the main storage device 205 or the external storage device 203, are loaded on the RAM for execution, and are executed by the CPU. Further, the storage unit 102 may be realized by a RAM, a ROM, or an external storage device 203, or may be realized by a combination thereof. Further, the communication unit 103 is realized by the communication device 206.

[Explanation of operation]
FIG. 11 is a flow chart showing an example of the molten steel knitting process. Such processing is started, for example, when the input receiving unit 111 of the molten steel production control device 100 receives an execution instruction of the molten steel knitting process from the person in charge of knitting.

When the molten steel knitting process is started, the molten steel knitting unit 113 acquires order information 121, sales plan information 122, order record information 123, and disposal cost information 124 from the storage unit 102 (step S001).

Next, the molten steel knitting unit 113 calculates an expected value of disposal cost (step S002). Specifically, the molten steel knitting unit 113 calculates the demand distribution for each ingot shape and quantity by statistical processing using the order information 121, the sales plan information 122, and the order record information 123.

FIG. 12 is a diagram showing an example of the demand distribution of one steel ingot (the vertical axis indicates the demand probability and the horizontal axis indicates the quantity). The molten steel knitting unit 113 uses the demand distribution obtained by statistical processing and the disposal cost information 124 to calculate the expected disposal cost value C _tm of the remaining number of steel ingots m by the following equation (1). In the formula (1), the probability when the demand number _n of the ingot shape t is P _n , and the disposal cost per steel ingot shape t is Ci.

When the molten steel knitting unit 113 calculates the expected disposal cost value for each ingot shape and quantity using the above formula (1), the calculated disposal cost expected value, the corresponding ingot shape, the component ID, and the quantity The expected disposal cost value information 125 associated with the above is generated and stored in the storage unit 102. The expected disposal cost value may be calculated by the organizer by, for example, RFM (Recentry Frequency Monumentary) analysis or the like, and may be input to the expected disposal cost value information 125.

Next, the molten steel knitting unit 113 acquires the knitting fixed date information 127, the ingot pattern information 126, and the evaluation index information 128 from the storage unit 102 (step S003), and executes the molten steel knitting (step S004).

The details of the molten steel knitting will be described below. First, the molten steel knitting unit 113 specifies the number of orders for steel ingots included in the target period from the present to the knitting confirmation date by using the order information 121, the sales plan information 122, and the knitting confirmation date information 127. Specifically, the molten steel knitting unit 113 specifies the knitting confirmation date from the knitting confirmation date information 127, and receives the order information for the steel ingot of the shape type in which the melting request date is included in the target period from the current date to the knitting confirmation date. Identified from 121 and sales plan information 122. Further, the molten steel knitting unit 113 calculates the total quantity of the specified ingots and generates the ingot order information 300.

FIG. 13 is a diagram showing an example of steel ingot order information 300. The steel ingot order information 300 has a record in which the ingot shape 300a, the melting request date 300b, and the quantity 300c are associated with each other.

Next, the molten steel knitting unit 113 uses the steel ingot pattern information 126 to form a plurality of types of molten steel knitting information in which a combination of steel ingot patterns satisfying the melting request date and the quantity of the ingot order information 300 is knitted in the order of the melting request date. Generate.

FIG. 14 is a diagram showing an example of molten steel knitting information 400. The molten steel knitting information 400 is information including a plurality of types of molten steel knitting, and includes a molten steel No. 400a, a steel ingot shape 400b, a quantity 400c, a residual steel ingot 400d, a melting date 400e, a steel ingot pattern No. 400f, and molten steel. It has a record in which a weight of 400 g, a furnace of 400 h, an additional work of 400i, a yield rate of 400 j, a destination of 400 k, and a batch process of 400 l are associated with each other.

The molten steel No. 400a is information for identifying the molten steel for producing the steel ingot of the associated shape type, and is represented by, for example, serial numbers 1 to n. The ingot shape 400b is information indicating the shape of the ingot, and is information common to the ingot shape 121c of the order information 121. The quantity 400c is information indicating the production quantity of the steel ingot of the associated shape type. The surplus steel ingot 400d is information indicating the shape type and the quantity of the ingots produced at the same time when the ingots of the associated shape type are produced. The melting date 400e is information indicating the melting date of the steel ingot of the associated shape type. The steel ingot pattern No. 400f is information for identifying a steel ingot pattern for manufacturing a steel ingot of the associated shape type, and is information common to the pattern No. 126a of the ingot pattern information 126. Since the molten steel weight 400 g, the furnace 400 h, the additional work 400i, the yield rate 400j, the destination 400k, and the batch process 400l are the same information as the steel ingot pattern information 126, the description thereof will be omitted.

In generating such molten steel knitting information 400, the molten steel knitting unit 113 uses the steel ingot order information 300 to associate a melting request date (2016/12/8) with a steel ingot of a shape type (for example, JJ550). ) And the quantity (2 pieces) are specified, and the molten steel No. 1 of the molten steel knitting information 400 is registered in the associated record. Further, the molten steel knitting unit 113 specifies a steel ingot pattern (for example, pattern No. 3) for manufacturing a specified quantity from the ingot pattern information 126, and registers it in the ingot pattern No. of the record of the molten steel No. 1.

Further, the molten steel knitting unit 113 is the target steel having the quantity (1 piece) obtained by subtracting the required production number (2 pieces) from the quantity (3 pieces) of the target steel ingots (JJ550) that can be manufactured using the steel ingot pattern. It is registered in the surplus steel ingot of the record of molten steel No. 1 in association with the ingot. Further, the molten steel knitting unit 113 correlates the steel ingots (RGG) produced at the same time when the target ingots are produced using the ingot pattern and the quantity thereof (5 pieces), and is the remainder of the record of the molten steel No1. Register in the ingot.

Further, the molten steel knitting unit 113 registers the melting request date of the target steel ingot in the steel ingot order information 300 as the melting date of the record of the molten steel No1. Further, the molten steel knitting unit 113 specifies the molten steel weight, the furnace, the additional work, and the yield rate associated with the ingot pattern of the target steel ingot from the ingot pattern information 126, and the corresponding item column of the record of the molten steel No. 1. To register with. Further, the molten steel knitting unit 113 specifies the destination, the batch process, and the like to which the target steel ingot is associated from the order information 121 or the sales plan information 122, and registers them in the corresponding item column of the record of the molten steel No1.

In this way, the molten steel knitting unit 113 generates a record associated with the molten steel No. 1 of the molten steel knitting information 400. Further, the molten steel knitting unit 113 repeatedly performs such processing so as to satisfy the quantity of each ingot registered in the ingot order information 300 and the desired melting date, to generate the molten steel knitting information 400.

In the molten steel knitting section 113, the target steel ingot (for example, JJ551 to which the molten steel No. 3 of the molten steel knitting information is associated) is associated with the residual steel ingot (RPG) of the previous record (for example, the record of the molten steel No. 1). When registered in (remainder steel ingot), the required production quantity (1 piece) is obtained by subtracting the quantity (2 pieces) registered in the surplus steel ingot from the required production quantity (for example, 3 pieces) of the target steel ingot. And the steel ingot pattern satisfying the quantity may be specified from the ingot pattern information 126.

Further, when there is a combination other than the combination of the ingot patterns registered in the previously generated molten steel knitting information 400, the molten steel knitting unit 113 generates the molten steel knitting information 400 for all the combinations of the ingot patterns. By performing such processing in the order of melting request dates of the steel ingot order information 300, the molten steel knitting unit 113 generates a plurality of types of molten steel knitting information 400 in which different steel ingot patterns are combined.

Next, the molten steel knitting unit 113 obtains a comprehensive evaluation value for each molten steel knitting using the molten steel knitting information 400 and the evaluation index information 128. Specifically, the molten steel knitting unit 113 sets a variable P _ji indicating whether or not the ingot pattern i is knitted into the molten steel j. For example, the molten steel knitting unit 113 sets P _ji = 1 when the ingot pattern i is knitted into the molten steel j, and P _ji = 0 when the steel ingot pattern i is not knitted into the molten steel j.

Further, the molten steel knitting unit 113 sets a variable X _kj indicating whether or not the ingot k is knitted into the molten steel j. For example, the molten steel knitting unit 113 sets X _kj = 1 when the ingot k is knitted into the molten steel j, and sets X _kj = 0 when the ingot k is not knitted into the molten steel j.

Further, the molten steel knitting unit 113 is an evaluation index for each predetermined evaluation index such as molten steel weight, variation in melting request date, yield, expected value of ingot disposal cost, destination level, batch process aggregation degree, additional work, and number of molten steel. The values are calculated, and the calculation results are used to calculate the comprehensive evaluation value for each dissolution formation.

Assuming that the molten steel weight of the ingot pattern i is a constant w _i , the molten steel weight W _j of the molten steel j is represented by the following formula (2).

The evaluation index value of the molten steel weight is represented by F ₁ Σ _j W _j . Note that F ₁ is a weighted value of the weight of molten steel.

Further, among the ingots (including the surplus steel ingot) generated by the molten steel j, the earliest melting request date is tmin _j , the melting request date of the ingot _k is tk, and the ingot weight of the ingot k is w _k . Then, the variation _Sj of the desired melting date of the steel ingot is represented by the following formula (3).

Further, the evaluation index value of the variation in the desired melting date of the steel ingot is represented by F ₂ Σ _j S _j . Note that F ₂ is a weighted value of the variation in the desired melting date of the steel ingot.

Further, assuming that the yield rate of the ingot pattern _i is a constant Qi and the molten steel weight of the ingot pattern _i is a constant wii, the yield _Yj is expressed by the following equation (4).

The evaluation index value of the yield is represented by F ₃ Σ _j Y _j . Note that F ₃ is a weighted value of the yield.

Further, of the ingot shape t knitted in all the molten steel (j pieces) included in the molten steel knitting information, the ingot of the final surplus ingot (steel ingot manufactured in excess of the quantity of the ingot order information). Assuming that the expected value of disposal cost for several rt is _Ct and _rt , the expected value of disposal cost C is expressed by the following equation (5).

The evaluation index value of the expected disposal cost value is represented by _F4C . Note that _F4 is a weighted value of the expected disposal cost value.

Further, assuming that the constant that becomes 1 when there is additional work of the ingot pattern i and 0 when there is no additional work is Ai, the total number of additional work A of J molten steels is expressed by the following equation (6). expressed.

The evaluation index value of the additional work is represented by _F5A . Note that _F5 is a weighted value for additional work.

Further, among the steel ingots knitted in all the molten steels (j pieces) included in the molten steel knitting information 400, the total weight of the ingots of the destination _a is set to wa, and the earliest melting request contained in the j pieces of molten steel. Assuming that the steel is knitted into molten steel with the day as Tmin, the latest melting request date as Tmax, and the t day as the melting request date, and the total weight of the ingot of the destination a as watt, the _levelness La of the destination _a Is expressed by the following equation (7).

The evaluation index value of the destination _a is represented by _Σa F _{6a La} . Note that F _6a is a weighted value of the destination a level.

Further, assuming that the total number of types of batch processes b associated with the ingots knitted in molten steel _j is B bb, the batch process aggregation degree B _b is expressed by the following equation (8).

The evaluation index value of the batch process b is represented by Σ _b F _{7 b} B _b . Note that F _7b is a weighted value of the batch process b.

Further, assuming that the constant of 1 when the melting furnace of the ingot pattern i is m and 0 when not m is D _mi , the number of molten steels N _m of the melting furnace m is expressed by the following equation (9). Will be done.

The evaluation index value of the number of molten steels in the melting furnace _m is represented by Σm F _8m N _m . Note that F _8m is a weighted value of the number of molten steels in the m furnace.

Next, the molten steel knitting unit 113 obtains the comprehensive evaluation value represented by the following formula (10) for each melting knitting information 400 by using the calculation result of each evaluation index value.

It will be described back to FIG. When the comprehensive evaluation value of the molten steel knitting related to all the molten steel knitting information 400 is calculated, the molten steel knitting unit 113 has a predetermined number (for example, 1 to 5) of molten steel knitting information 400 having the minimum (or maximum) comprehensive evaluation value. Is specified and output to the display together with the comprehensive evaluation value as a result of molten steel knitting (step S005).

Further, the molten steel knitting unit 113 determines whether or not to correct the weighted value of the evaluation index information 128 (step S006). Specifically, the molten steel knitting unit 113 displays on the display predetermined screen information for asking the user whether or not to correct the weighted value of the evaluation index information 128 via the output processing unit 112. Further, when the molten steel knitting unit 113 obtains a weighting value correction instruction from the user via the input receiving unit 111, the molten steel knitting unit 113 determines that the weighting value is to be corrected (Yes in step S005), and returns the process to step S003. When the molten steel knitting unit 113 acquires the evaluation index information 128 from the storage unit 102 in step S003, the molten steel knitting unit 113 displays predetermined screen information for receiving the weighted value correction information via the output processing unit 112 on the display. The weighted value of the evaluation index information 128 is updated based on the correction information acquired via the input receiving unit 111.

On the other hand, when the input information indicating that the weighting value does not need to be corrected is acquired (No in step S005), the molten steel knitting unit 113 ends the processing of this flow. The molten steel knitting unit 113 executes such a molten steel knitting process for each component ID of the molten steel, and is optimal in consideration of predetermined evaluation indexes such as the weight of the molten steel and the yield while satisfying the constraint conditions that can be knitted into the same molten steel. Obtain a molten steel knitting.

The molten steel knitting unit 113 transmits the generated molten steel knitting information 400 to a predetermined system or device such as a production planning system via the communication unit 103. In the production planning system, it is possible to formulate a production plan using the acquired molten steel knitting information 400.

The molten steel production control apparatus 100 according to the present embodiment has been described above. According to such a molten steel production control device 100, more optimal molten steel knitting can be performed in consideration of various evaluation indexes related to molten steel production.

[Second Embodiment]
The molten steel production control device 100 according to the second embodiment of the present invention performs molten steel knitting in consideration of the cost of rearranging the inventory of steel pieces in addition to each evaluation index of the first embodiment. In the manufacturing process in the steel industry, ingots are manufactured from molten steel, and then steel pieces are manufactured by rolling or cutting. Usually, a plurality of steel pieces are produced from one steel ingot. At this time, the melting request date of the ingot is set to the earliest melting request date in the contained steel pieces, and the melting request date of the molten steel is set to the earliest melting request date of the contained steel ingot. ing. In the present embodiment, the molten steel knitting is performed in consideration of the variation in the desired melting date of the steel pieces in the same molten steel.

FIG. 15 is a diagram showing an example of order information 121 according to the second embodiment. As shown in the figure, the order information 121 is obtained by adding the steel piece weight 121i to the order information 121 of the first embodiment. The steel piece weight 121i is information indicating the weight of the steel piece contained in the steel ingot of the associated shape type. Since each of the other items 121a to 121h is the same as the corresponding item information of the order information 121, the same reference numerals are given and the description thereof will be omitted.

FIG. 16 is a diagram showing the evaluation index information 128 according to the second embodiment. As shown in the figure, the evaluation index information 128 is obtained by adding a weighted value of the variation in the desired date of melting of steel pieces to the evaluation index information 128 of the first embodiment. Since each of the other evaluation indexes is the same as the evaluation index information 128 of the first embodiment, the same reference numerals are given and the description thereof will be omitted.

In step S004 of the molten steel knitting process, the molten steel knitting unit 113 performs the following calculation in consideration of the steel pieces in addition to the calculation process relating to the above-mentioned evaluation index. Specifically, when the variable X _kj for knitting the ingot k into the molten steel j is set, Z _sj indicating whether or not the steel piece s is knitted into the molten steel j is unique based on the order information 121 shown in FIG. I want it. Assuming that the earliest melting request date of the steel piece contained in the molten steel j is tsmin _j , the melting request date of the steel piece s is t _s , and the steel piece weight of the steel piece s is w _s , the variation of the melting request date of the molten steel j SS _j is represented by the following equation (11).

The evaluation index value of the variation in the melting date of the steel piece is represented by F ₉ Σ _j SS _j . Note that F ₉ is a weighted value of the variation in the desired date for melting the steel pieces.

Further, the molten steel knitting unit 113 obtains the comprehensive evaluation value represented by the following equation (12) for each melting knitting information 400 by using the calculation result of each evaluation index value including the evaluation index value of the variation in the desired date for melting the steel pieces. ..

Since steps S001 to S003, S005 and S006 of the molten steel knitting process are the same as those of the first embodiment described above, the description thereof will be omitted.

According to the molten steel production control device 100 according to the second embodiment, more detailed molten steel knitting can be performed in consideration of the cost of rearranging the inventory of steel pieces.

[Third Embodiment]
The molten steel production control device 100 according to the third embodiment of the present invention repeatedly executes molten steel knitting every predetermined knitting confirmation date to perform molten steel knitting with a reduced calculation load. For example, if the target period until the knitting confirmation date is long, the number of melting request dates included in that period increases in proportion to it, and the number of patterns of molten steel knitting to be generated also becomes enormous. In the molten steel production control device 100 of the present embodiment, the knitting confirmation date is set to a plurality of short periods, and the molten steel knitting is performed for each target period, thereby reducing the burden of arithmetic processing. The molten steel knitting unit 113 according to the present embodiment divides the period up to one knitting confirmation date received from the knitting person into a plurality of short periods, and generates knitting confirmation date information having a plurality of periods. Is also good.

FIG. 17 is a diagram showing an example of organization confirmation date information 127 according to the third embodiment. As shown in the figure, the organization confirmation date information 127 includes a plurality of periods, and other than that, it is the same as the organization confirmation date information 127 of the first embodiment. do. Further, FIG. 18 is a flow chart showing an example of the molten steel knitting process according to the third embodiment.

When the molten steel knitting is performed in step S004 of FIG. 18, the molten steel knitting unit 113 determines whether or not the next knitting confirmation date exists (step S004a). Specifically, the molten steel knitting unit 113 refers to the knitting fixed date information 127, and determines whether or not there is a knitting fixed date after the target period in which the molten steel knitting is performed in step S004. More specifically, when molten steel knitting up to a predetermined knitting finalization date (for example, 2016/1/12) is performed in step S004, the molten steel knitting unit 113 will be subjected to the subsequent knitting finalization date (2016 in this example). It is determined whether / 1/19, 2016/1/24, and 2016/2/3 are present).

Then, when it is determined that there is a knitting confirmation date after the target period in which the molten steel knitting is performed (Yes in step S004a), the molten steel knitting unit 113 returns the processing to step S004 and performs the molten steel knitting. Perform molten steel knitting for the target period until the knitting confirmation date. On the other hand, when it is determined that there is no knitting confirmation date after the target period in which the molten steel knitting is performed (No in step S004a), the molten steel knitting unit 113 shifts the processing to step S005.

Since steps S001 to S003, S005 and S006 of the molten steel knitting process are the same as those of the first embodiment described above, the description thereof will be omitted.

According to the molten steel production control device 100 according to the third embodiment, the burden of arithmetic processing can be reduced by setting the knitting confirmation date to a plurality of short periods and performing the molten steel knitting for each target period. can.

[Fourth Embodiment]
A fourth embodiment of the present invention relates to a molten steel production control system having a molten steel production control device 100 and a sales support system 500, wherein the molten steel production control device 100 exposes the surplus steel ingot to the sales support system 500. It provides sales support to actively receive orders for steel ingots.

FIG. 19 is a functional block diagram showing an example of the functional configurations of the molten steel production control device 100 and the sales support system 500 included in the molten steel production control system according to the fourth embodiment. As shown in the figure, the communication unit 103 of the molten steel production control device 100 according to the fourth embodiment is connected to the sales support system 500 via a predetermined communication line network N such as the Internet. Since each functional unit of the molten steel production control device 100 is the same as that of the above-described embodiment, the description thereof will be omitted.

The sales support system 500 is a system that can be used by sales personnel and supports various sales activities such as receiving orders for steel ingots. The sales support system 500 is realized by an information processing device such as a general-purpose computer or a workstation.

As shown in the figure, the sales support system 500 has a sales information management unit 501 and an information storage unit 502. The sales information management unit 501 is a functional unit that manages and updates sales information. Further, the information storage unit 502 stores the surplus steel ingot information 511 and the business information 512.

FIG. 20 is a diagram showing an example of the residual steel ingot information 511. The surplus steel ingot information 511 is information on the surplus steel ingot manufactured in excess of the quantity of the ingot order information 300. Specifically, the surplus steel ingot information 511 has a record in which the surplus steel ingot shape 511a, the quantity 511b, the disposal cost 511c, the expected disposal cost value 511d, and the point 511e are associated with each other.

The surplus steel ingot shape 511a is information indicating the shape type of the surplus steel ingot, and is information common to the steel ingot shape 121c of the order information 121. The quantity 511b is information indicating the quantity of the surplus steel ingot. The disposal cost 511c is information indicating the disposal cost of the surplus steel ingot alone, and is the same information as the disposal cost 124c of the disposal cost information 124. The expected disposal cost value 511d is information indicating an expected value of the disposal cost according to the quantity, and is common information with the expected disposal cost value information 125. Point 511e is information indicating a sales point given to a sales person when the associated surplus steel ingot is sold. The point 511e may be set to a higher value, for example, as the expected value of disposal cost is higher and the steel ingot has a higher value.

The surplus steel ingot information 511 is generated by the sales information management unit 501 that has acquired predetermined information from the molten steel knitting unit 113. Specifically, the molten steel knitting unit 113 uses the molten steel knitting information 400, the disposal cost information 124, and the expected disposal cost value information 125 to form the ingot shape, quantity, disposal cost, and disposal of the surplus steel ingot. It is specified as an expected cost value, and predetermined information associated with these is transmitted to the sales support system 500. The sales information management unit 501 of the sales support system 500 generates the surplus steel ingot information 511 by associating a predetermined point according to the magnitude of the expected disposal cost value with the predetermined information acquired from the molten steel knitting unit 113.

FIG. 21 is a diagram showing an example of business information 512. Sales information 512 is information regarding sales personnel and sales results. Specifically, the sales information 512 has a record in which the person in charge ID 512a, the person in charge name 512b, and the acquired points 512c are associated with each other.

The person in charge ID 512a is information that uniquely identifies the person in charge of sales. The name of the person in charge is 512b, which is information indicating the name of the person in charge of sales. The earned points 512c is information indicating the sales points earned by the sales person.

The business information 512 is stored in advance in the information storage unit 502. The sales information management unit 501 gives points according to the surplus steel ingot ordered to the sales person who received the order for the surplus steel ingot. Specifically, the sales information management unit 501 identifies the points of the surplus steel ingot ordered from the surplus steel ingot information 511, adds the points acquired by the sales person in charge of the order to the acquired points 512c, and updates the sales information 512.

As described above, according to the molten steel production management system according to the present embodiment, information on the surplus steel ingot is generated and disclosed to the sales support system 500 to support the positive ordering of the surplus steel ingot. can do.

In the above-mentioned first embodiment and the second embodiment, the molten steel weight, the number of molten steels, the expected value of disposal cost, the target level, the batch process aggregation degree, the additional work, the yield, the variation in the ingot melting request date, and the steel pieces The evaluation index values were calculated for all the evaluation indexes of the variation in the requested dissolution date, and the total of these was obtained as the comprehensive evaluation value. However, the present invention is not limited to this, and at least one of these evaluation indexes is used. One or more evaluation index values may be calculated to obtain a comprehensive evaluation value. Further, the molten steel production control device 100 may calculate the comprehensive evaluation value of the molten steel knitting by using a predetermined evaluation index value among the calculated evaluation index values.

Further, the molten steel production control device 100 according to the above-described embodiment is instructed to execute molten steel knitting from a terminal (for example, a personal computer) used by a knitting person via a predetermined network such as the Internet, and an arithmetic expression and evaluation. The input of the weighted value of the index may be accepted.

Further, the functional blocks of the molten steel production control device 100 are classified according to the main processing contents in order to make it easy to understand the functions of the molten steel production control device 100 realized in the present embodiment, and the functional blocks of each function are classified. The present invention is not limited by the method of classification and its name. Further, each configuration of the molten steel production control device 100 can be further classified into more components according to the processing content. It can also be categorized so that one component performs more processing.

Further, all or a part of each functional unit may be constructed by hardware mounted on a computer (such as an integrated circuit such as an ASIC). Further, the processing of each functional unit may be executed by one hardware or may be executed by a plurality of hardware.

Further, the present invention is not limited to the above-described embodiment, and includes various modifications. For example, the above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to the one including all the described configurations. Further, it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. Further, it is possible to add, delete, or replace a part of the configuration of each embodiment with another configuration.

Further, in the above description, the control lines and information lines indicate those considered necessary for explanation, and do not necessarily indicate all the control lines and information lines in the product. In practice, it can be considered that almost all configurations are interconnected.

100 ... molten steel production control device, 101 ... calculation unit, 102 ... storage unit,
103 ... Communication unit, 111 ... Input reception unit, 112 ... Output processing unit,
113 ... molten steel knitting department, 121 ... order information, 122 ... sales plan information,
123 ... Order record information, 124 ... Disposal cost information,
125 ... Expected disposal cost information, 126 ... Steel ingot pattern information,
127 ... Organization confirmation date information, 128 ... Evaluation index information, 201 ... Input device,
202 ... output device, 203 ... external storage device, 204 ... arithmetic unit,
205 ... main memory, 206 ... communication device, 207 ... bus

Claims (9)

Specify the required quantity for each shape type of ingot for which the desired melting date is set within the target period until the predetermined knitting confirmation date, and specify the shape type and quantity of the ingot manufactured from one molten steel. It is provided with a molten steel knitting section for performing molten steel knitting that satisfies the required melting date and the required quantity by combining the predetermined steel ingot patterns.
The molten steel knitting part is
The ingot pattern that satisfies the required quantity of the ingot related to the shape type to be manufactured is specified in the order of the requested melting date, and the required quantity is obtained from the production quantity of the ingot related to the shape type using the ingot pattern. The quantity obtained by subtracting the quantity and the production quantity of the ingot for a shape type other than the shape type simultaneously manufactured using the ingot pattern are defined as the quantity of the surplus steel ingot for each shape type. Register the result of molten steel knitting ,
In specifying the ingot pattern, when the ingot related to the shape type to be manufactured is registered as the surplus steel ingot, the required quantity of the ingot related to the shape type is calculated from the quantity of the surplus steel ingot. The subtracted quantity is calculated as the required quantity, and the steel ingot pattern that satisfies the calculated required quantity is specified.
It is characterized in that the value of a predetermined evaluation index and the comprehensive evaluation value using the value of the evaluation index are calculated for each result of the molten steel knitting in a plurality of ways according to the combination of the specified steel ingot patterns. Molten steel production control equipment. The molten steel production control device according to claim 1.
The molten steel knitting part is
The value of the evaluation index and the above-mentioned value of the evaluation index and the said A molten steel production control device characterized by calculating a comprehensive evaluation value. The molten steel production control device according to claim 2.
The molten steel knitting part is
Based on the demand distribution shown by the relationship between the demand probability for each shape type of the ingot and the quantity thereof, and the disposal cost for each shape type of the ingot, for each shape type and quantity of the ingot. A molten steel production control device characterized in that the expected value of the disposal cost is calculated. The molten steel production control device according to claim 2.
The molten steel knitting part is
In addition to the evaluation index, the variation in the desired melting date of the steel pieces contained in the ingot is used as an evaluation index, and at least one of the evaluation indexes including the variation in the requested melting date of the steel piece is used as the evaluation index. A molten steel production management device characterized by calculating an index value and the comprehensive evaluation value. The molten steel production control device according to claim 1.
The molten steel knitting part is
When there is a knitting fixed date after the target period in which the molten steel knitting is performed, the molten steel production control apparatus is characterized in that the molten steel knitting is performed in a new target period until the knitting confirmed date. The molten steel production control device according to claim 1.
It also has a communication unit that communicates with external devices.
The molten steel knitting unit generates molten steel knitting information indicating the contents of the molten steel knitting in the target period.
The communication unit is a molten steel production management device characterized in that the molten steel formation information is transmitted to a predetermined production planning system that formulates a production plan for the molten steel in the target period based on the molten steel formation. The molten steel production control device according to claim 3.
It also has a communication unit that communicates with external devices.
Based on the contents of the molten steel knitting in the target period, the molten steel knitting unit generates information on the surplus steel ingot in which the surplus steel ingot is associated with the expected value of the waste cost of the surplus steel ingot.
The communication unit is a molten steel production control device characterized by transmitting information about the surplus steel ingot to a sales support system available to a sales person. It is a molten steel production control method performed by the molten steel production control device.
The molten steel production control device is
Specify the required quantity for each shape type of ingot for which the desired melting date is set within the target period until the predetermined knitting confirmation date, and specify the shape type and quantity of the ingot manufactured from one molten steel. A step of performing molten steel knitting that satisfies the required melting date and the required quantity by combining the predetermined steel ingot patterns.
The step of calculating the comprehensive evaluation value of the molten steel knitting is performed.
In the step of performing the molten steel knitting,
The ingot pattern that satisfies the required quantity of the ingot related to the shape type to be manufactured is specified in the order of the requested melting date, and the required quantity is obtained from the production quantity of the ingot related to the shape type using the ingot pattern. The quantity obtained by subtracting the quantity and the production quantity of the ingot for a shape type other than the shape type simultaneously manufactured using the ingot pattern are defined as the quantity of the surplus steel ingot for each shape type. Register the result of molten steel knitting ,
In specifying the ingot pattern, when the ingot related to the shape type to be manufactured is registered as the surplus steel ingot, the required quantity of the ingot related to the shape type is calculated from the quantity of the surplus steel ingot. The subtracted quantity is calculated as the required quantity, and the steel ingot pattern that satisfies the calculated required quantity is specified.
In the step of calculating the comprehensive evaluation value,
It is characterized in that the value of a predetermined evaluation index and the comprehensive evaluation value using the value of the evaluation index are calculated for each result of the molten steel knitting in a plurality of ways according to the combination of the specified steel ingot patterns. Molten steel production control method. It is a molten steel production control system that has a molten steel production control device and a sales support system.
The molten steel production control device is
Specify the required quantity for each shape type of ingot for which the desired melting date is set within the target period until the predetermined knitting confirmation date, and specify the shape type and quantity of the ingot manufactured from one molten steel. A molten steel knitting that satisfies the required melting date and the required quantity is performed by combining the predetermined ingot patterns, and in the molten steel knitting, the required quantity of the ingot related to the shape type to be manufactured is obtained in the order of the requested melting date. The ingot pattern to be satisfied is specified, and the quantity obtained by subtracting the required quantity from the production quantity of the ingot related to the shape type using the ingot pattern and the shape simultaneously manufactured using the ingot pattern. The result of the molten steel knitting is registered with the production quantity of the ingot related to the shape type other than the type and the quantity of the surplus steel ingot related to each shape type, and the manufacturing target is specified when the ingot pattern is specified. When the steel ingot related to the shape type is registered as the surplus steel ingot, the quantity obtained by subtracting the required quantity of the steel ingot related to the shape type from the quantity of the surplus steel ingot is calculated as the required quantity and calculated. The steel ingot pattern satisfying the required quantity is specified, and the value of the predetermined evaluation index and the value of the evaluation index are used for each result of the plurality of ways of the molten steel knitting according to the combination of the specified steel ingot patterns. The molten steel knitting section that calculates the comprehensive evaluation value that was used, and
It is equipped with a communication unit that communicates with an external device.
Based on the contents of the molten steel knitting in the target period, the molten steel knitting unit generates information on the surplus steel ingot in which the surplus steel ingot and the expected value of disposal cost of the surplus steel ingot are associated with each other.
The communication unit transmits information about the surplus steel ingot to the sales support system, and the communication unit transmits the information about the surplus steel ingot.
The sales support system is
The surplus steel ingot information including a predetermined point associated with the surplus steel ingot included in the information regarding the surplus steel ingot is associated with the point of the surplus steel ingot to a sales person who has won an order for the surplus steel ingot. A molten steel production management system characterized by having a sales information management department that generates sales information.

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