JPS6328701B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a continuous casting mold equipped with an electromagnetic stirring linear motor therein.

Generally, during continuous casting, an electromagnetic stirring method is widely used to suppress segregation, prevent columnar crystals, and form equiaxed crystals, and a linear motor is used for the stirring. Conventionally, the linear motor has generally been installed between the front wall and the rear wall, and each linear motor has been disassembled when replacing the copper plate. When changing to another mold, each part had to be removed and installed.

Therefore, this type of motor requires a lot of effort to attach and detach, the processing and replacement of the copper plate is complicated, and there are also disadvantages in that a large number of spare linear motors must be prepared. .

The present invention was proposed in order to solve the above-mentioned problems, and its main purpose is to provide a continuous casting mold that is extremely easy to attach, detach, and replace.

To achieve this objective, the present invention provides a rearward-opening linear motor housing box in a rearward-opening mold box, fixes the entire linear motor to a support, and fixes the entire linear motor and the support to The mold box and the linear motor housing box can be freely entered and exited from the rear, and the respective openings of the mold box and the linear motor housing box are closed when the entire linear motor and support are fitted.

Furthermore, a cooling system for cooling the inside of the linear motor housing box is provided on the support, and is separate from the copper plate cooling system.

The present invention will be explained below with reference to the embodiments shown in the drawings.A mold is constructed by assembling a long side wall A and a short side wall B in a rectangular shape and passing molten metal through the area surrounded by them. , only the long side wall A and the short side wall B adjacent thereto are shown. The outside of long side wall A is
The mold box MB is composed of a vertical copper plate 1 facing molten metal, an upper wall 2, a lower wall 3, and an open fixed rear wall 4 (not shown in detail). Inside the mold box MB, there is provided a linear motor housing box LB having a U-shaped cross section and opening to the rear, which is constituted by a front plate part 5, an upper plate part 6, and a lower plate part 7. Furthermore, inside this linear motor box LB, there is a linear motor 8.
The groups and a support 9 that supports them as a whole are fitted. The support body 9 is made of non-magnetic steel and includes a front plate 1 that closes the opening of the linear motor housing box LB.
0, a mounting plate 11 that is separated from this and closes the opening of the fixed rear wall 4, a horizontal plate 12 that connects these, a support plate 14 fixed to the front of the front plate 10 with non-magnetic steel bolts 13, and further attached to the front plate 10. A reinforcing frame 15 having water passage openings 15a and 15'a arranged at intervals in the longitudinal direction above and below the horizontal plate 11 to increase rigidity across the plate 11,
15'. Further reinforcement frame 15
Convex portions are provided on the upper and lower sides of the linear motor, and recessed portions are provided on the inner surfaces of the upper wall 2 and the lower wall 3 to facilitate positioning when installing the entire linear motor.

Further, the linear motor 8 group includes a coil 8a and an iron core 8b, and the iron core 8b has a non-magnetic steel bolt 1.
By being fixed to the front plate 10 by 6,
It is integrally fixed to the support body 9. Thus,
The 8 groups of linear motors and the support body 9 are integrated into a mold box MB and a linear motor housing box.
By means of a mounting bolt 18 that is fitted into the LB and passes through a bolt hole 17 formed around the mounting plate 11,
It is fixed to the upper wall 2, the lower wall 3 and the fixed rear wall 4. At this time, for sealing against cooling water, which will be described later, the spaces between the upper wall 2, the lower wall, the fixed rear wall 4, and the mounting plate 11, as well as the upper plate part 6, the lower plate part 7, and the side plate part or opening (not shown). O-rings 19 and 20 are respectively disposed between the rear plate portion having the above-mentioned structure and the front plate 10.

On the other hand, the lower wall 3 is fixed by a fixing bolt 22 screwed into the copper plate 1 through a through hole 21 with its head facing the groove 11a of the mounting plate 11.
Similarly, the upper wall 2 is also fixed to the copper plate 1, although details are not shown. Furthermore, the linear motor housing box LB is attached to the mold box MB by means of fixing bolts 23 that fix the front plate part 5 and the copper plate 1.
Fixed to .

In order to cool the copper plate 1, a longitudinal section between the lower wall 3 and the lower plate part 7 is connected to a cooling water inlet chamber 24 below the horizontal plate 12 which communicates with a cooling water inlet (not shown). A large number of cooling water introduction holes 2 spaced apart in the direction
5 is formed and is connected to the inlet side header 26.
Further, a large number of vertically oriented slit holes 27 are formed in a row between the copper plate 1 and the front plate part 5, so that when the cooling water from the inlet header 26 passes through these, the copper plate 1 is cooled. . The water used for cooling is led from the outlet header 28 to the cooling water outlet chamber 30 through the cooling water outlet hole 29 between the upper wall 2 and the upper plate part 6, and is led to the cooling water outlet chamber 30 through the cooling water outlet (not shown). ). Since the copper plate cooling system is formed in this manner, the area occupied by the linear motor becomes large, and it is possible to arrange the linear motor over almost the entire area of the copper plate 1 in the vertical direction.

On the other hand, in order to cool the submerged linear motor, a water supply pipe 31 is provided across the mounting plate 11 and the front plate 10, so that cooling water is guided to the 8 groups of linear motors in the linear motor housing box LB. ing. Further, this cooling water is discharged through a drainage pipe 33 through a drainage hole 32 provided vertically in the center. This box cooling system is
This is a different system from the copper plate cooling system mentioned above. Therefore, both systems can be controlled separately, and cooling capacity suitable for each system can be ensured. Furthermore, by measuring the temperature of the wastewater, it is also possible to detect abnormalities in the mold or linear motor. The above configuration is just an example, and the flow of water can also be reversed by replacing the supply/discharge pipes.

Furthermore, when the support body 9 and the linear motor 8 are fitted together, the reinforcing frame 15 and the horizontal plate 12 are protruded from the end face of the front plate 10, so that the support body 9 and the linear motor 8 can be fitted smoothly in a predetermined state. The projecting portion is fitted into the mold box while being guided into a groove (not shown) formed on the inner surface of the corresponding mold box.

34 is a lead wire 35 from the outside to the linear motor 8
It is a conduit for guiding the
A seal gasket 36 (for example, a V gasket) is provided at the mouth of the conduit 3 to provide a seal against the cooling water, and is fixed with a base 37 and bolts 38.

In the mold configured as described above, when removing the linear motor, remove each mounting bolt 18 and pull out the mounting plate 11, and then remove the entire linear motor 8 together with the support 9 from the mold box MB and the linear motor storage box LB. Can be separated. Therefore, if it is necessary to attach this to another mold, the whole can be transferred and attached. On the other hand, if a spare linear motor 8 and support body 9 are prepared in one body, if a problem occurs with the linear motor currently in use, it can be quickly replaced. In addition, especially when replacing the copper plate 1 and performing surface treatment such as machining or plating, if the linear motor 8 and the support body 9 are removed together, what is left is the mold box MB and the linear motor housing box LB.
Therefore, subsequent disassembly is extremely easy, and maintenance of the copper plate 1 can be performed quickly.
Moreover, since the individual linear motors 8 are attached and detached integrally with the support body 9, damage to the linear motors 8 is extremely reduced compared to the conventional method in which the linear motors 8 are detached from each other.

Note that, as in the above example, if the cooling water inlet chamber 24 and the cooling water outlet chamber 30 are formed in the support body 9 and the cooling water flow path is formed between the mold box MB and the linear motor housing box LB, the copper plate 1 It is preferable that the cooling water flow path is communicated with the inlet chamber 24 and the outlet chamber 30, since the cooling water flow path can be completed when the linear motor 8 is fitted into the linear motor 8. be. Further, a water supply pipe 31 and a discharge pipe 3 are inserted through the support body 9.
3 to the linear motor chamber, a linear motor cooling channel separate from the cooling water flow of the copper plate can be completed. In addition, by forming an overhang on the support body 9 and guiding it into the groove of the mold box MB, alignment when the linear motor is installed becomes easy, and the linear motor is guided into a predetermined space, thereby preventing damage to the linear motor. It can also have a preventive function. Furthermore, the support body 9 itself is framed as a whole by the horizontal plate 12 and the reinforcing frames 15, 15', and has a high strength. Therefore, the support body 9 helps improve the strength of the entire mold.

As described above, in the present invention, a linear motor housing box is disposed within the mold box, and the linear motor integrated with the support body is made to be freely accessible from the rear of the mold box and the linear motor housing box. , it becomes extremely easy to attach and detach the linear motor. Since the support body closes the rear opening of each box, the cooling water guide path can be completed. Furthermore, since at least the mounting plate of the support supports the rear opening of the mold box, the desired rigidity of the mold box can be ensured.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view of the mold of the present invention, and FIG.
The figure is its cross-sectional view, Figure 3 is an enlarged cross-sectional view of the main part,
FIG. 4 is a partially sectional side view of the lead wire guide section. A...Long side wall, B...Short side wall, MB...Mold box, LB...Linear motor housing box, 1...Copper plate,
2... Upper wall, 3... Lower wall, 4... Fixed rear wall, 5...
Front plate part, 6... Upper plate part, 7... Lower plate part, 8... Linear motor, 8a... Coil, 8b... Iron core, 9... Support body,
10... Front plate, 14... Support plate, 18... Mounting bolt,
27...Slit hole.

Claims (1)

[Claims] 1 A mold box is constituted by a copper plate facing the molten metal, an upper wall, a lower wall, and a rear wall having an opening, and a linear motor housing box opening to the rear is provided in this mold box, and a support body and the entire front surface thereof are provided. The mold box and the linear motor storage box are configured such that the integrated linear motor can be moved in and out from the rear of the mold box and the linear motor storage box, and the support body is used to close each opening of the mold box and the linear motor storage box to close the mold box. 1. A mold for continuous casting, characterized in that a cooling system for cooling the inside of the linear motor housing box is provided on the support body separately from the copper plate cooling system.