JPH0212725B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] [Industrial Application Field] The present invention is a wall body, The present invention relates to a method for forming a cured body or a cured coating such as a structure or a protector.

[Conventional technology]

A method of injecting a curable fluid material, such as an unshaped refractory, using a frame to form a refractory coating, that is, a refractory lining layer on the inner peripheral surface of a molten metal container, is described in Japanese Patent Publication No. 35375/1983. As is well known. The method is to attach a frame equipped with a vibrator to a predetermined position in the ladle, and inject a monolithic refractory into the space formed by the inner periphery of the ladle and the frame to apply vibrations. FIG. 6 shows a schematic cross-sectional view of the device.

In FIG. 6, a support plate 3 and beam support columns 6a and 6b are provided on the bottom working floor 2 of the pit 1.
The ladle 4 is placed on the support plate 3. Thus, the ladle 4 leaves a permanent brick layer 5;
2 shows a preparatory stage for forming a wear lining layer.

The beam 7 to which the frame body 10 is fixed has sliding bearings 8a, 8 fitted with beam support columns 6a, 6b.
b, and can freely move in the horizontal direction via position-moving screw fittings 9a and 9b. The frame body 10 is a double cylinder body 1
A hollow cylindrical rigid body consisting of 1a and 11b, for example, vibrators 12a to 12 such as electromagnetic vibrators.
c is attached to the inner cylindrical body 11b, and the outer cylindrical body 11a is separated from the inner wall 4a of the ladle 4 by a set separation distance to form a space in which an irregular lining layer can be formed.

Further, the inner and outer cylindrical bodies 11b and 11a are connected to the on-off valve 1.
The inner cylinder 11b of the frame 10 is further provided with a canopy 16 having an injection hole 14 and an exhaust hole 15 for the curable fluid material at the upper part, and the beam 7 is connected to the inner cylinder 11b. frame 1 through
It is engaged with 0.

Therefore, when forming an amorphous refractory lining layer on the permanent brick layer 5 of the ladle 4 using a hardening fluid material such as a castable refractory,
The castable refractory is injected into the inner cylindrical body 11b having a cylindrical space through the injection hole 14, and then the castable refractory is poured into the space between the outer cylindrical body 11a and the permanent brick layer 5 through the opening valve 13. Inject into 17. During this injection, in order to increase the fluidity of the castable refractory and form a dense lining layer, the vibrators 12a to 1
In addition to activating the refractory 2c, appropriate measures are taken, such as closing the exhaust hole 15 and press-fitting castable refractories.

[Problem that the invention seeks to solve]

In order to form a refractory lining layer of a molten metal container having a deep shape in the height direction, such as a ladle, by the means shown in FIG. It is necessary to prepare a large number of frames and expensive vibrators, which increases the initial investment.
There is a problem that the work of removing the remaining refractories from the frame body 10 and the on-off valve 13 is very troublesome and the work efficiency is poor.

In addition, with this method, the opening/closing valve 13 needs to be located at the center of the lower part, so the injection site is limited, and it cannot be used in molten metal containers of different shapes, such as a mixed iron car called a torpedo car. I can't.

Furthermore, in order to impart effective fluidity to the monolithic refractories to be injected, it is necessary to apply relatively strong vibrations, but the effect on the frame, beams, sliding bearings, and position-moving screw fittings is small. There is also the technical issue that the stronger the vibrations, the higher the equipment repair costs.

[Means for solving problems]

The present inventors have developed a method that is easy to work with, is inexpensive, and is capable of molding a cured product or cured coating with excellent quality and performance.

The gist of the method is to form a cured body or a cured coating by injecting a curable fluid material between frames or into a space between a frame and a coated body. A one-way hole plug body is provided at an arbitrary portion, and the curable fluid material is injected or the vibration imparting body is inserted through the plug body, either singly or simultaneously.

Next, the operation of the present invention will be explained with reference to the attached drawings.

FIG. 1 is a schematic explanatory diagram when the method of the present invention is used for ladle lining construction.

In the figure, the ladle 4 is placed on support plates 3a, 3b on the bottom working floor 2 of the pit 1, and clamp fittings 18a, 18 fixed to the bottom working floor 2
It is fixed by b.

The truncated conical frame 19 is removably attached to a beam 21 that is slidably held by support columns 20a and 20b fixed to the bottom work floor 2.

The beam 21 also includes a positioning clamp device 22a, which is fixed to the upper part of the support columns 20a, 20b.
22b, the center of the frame 19 can be precisely aligned with the center of the ladle 4. The frame body 19 is equipped with one-way opening plug bodies 23a to 23f, which will be described in detail later.
One-way hole plug body 23 attached to the lower part of the frame body 19
c (hereinafter simply referred to as the plug) has a mounting flange 2.
A curable fluid material (castable refractory material in this case) supply hose 25 is connected via 4a.

Further, the feed hose 25 has a mounting flange 24
A predetermined amount of castable refractories is connected to the castable refractory pumping device 26 via the plug body 26 through a control device and a valve device (not shown).
3c and is fed into the space 27 between the frame 19 and the ladle 4.

Further, the operator 28 uses the electric vibrator 29 via the stopper 23d to vibrate the castable refractory 30 supplied to the space 27, thereby improving fluidity and promoting dense filling. In the figure, 31 indicates a vibration imparting body, that is, a vibrator, and 32
is a conductive cable, and 33 is a power supply device. Further, reference numerals 34 and 35 indicate guide holes for the feed hose 25 and the conductive cable 32 provided in the beam 21.

As described above, after the castable refractory 30 is fed by the feed hose 25 and the lining layer at the bottom of the ladle 4 is formed, the feed hose 25 is reconnected to the stopper 23a, and the castable refractory is fed again. 3
0 to form a lining layer on the side surface of the ladle 4. At that time, the plugs 23b, 23e,
If a vibration imparting body such as a vibrator 31 is inserted from 23f or the like and filling is performed while imparting vibration to the castable refractory 30, it is possible to obtain an extremely dense and robust lining layer.

During the above-mentioned construction, castable refractories may be simultaneously injected from a plurality of plug bodies, and in addition, a vibration imparting body may be inserted simultaneously from a plurality of plug bodies to apply vibration. Further, as long as the pot life of the castable refractory is within the range, injection and vibration may be carried out separately over time, but better results are usually obtained if injection and vibration are carried out at the same time.

FIGS. 2a to 2e are perspective views showing each member of the valve body of the one-way opening plug body used in the present invention.

FIG. 2a shows the upper flange hardware 36 and 37.
A to 37d indicate assembly bolt holes, and 38 indicates a through guide hole.

FIG. 2b shows the upper elastic tongue 39, which is made of rubber, plastic, or an elastic metal piece. 40
a to 40d indicate assembly bolt holes. Reference numeral 41 denotes a through hole having substantially the same outer diameter as a castable supply nozzle and a vibrator, which will be described later.

FIG. 2c shows the middle elastic tongue piece 42, which is made of an elastic material such as rubber or plastic. 43a to 43d are assembly bolt holes, and 44 is a slit. In this example, three slits are intersected to form six petals.

FIG. 2d shows a lower elastic tongue piece 45, which is made of an elastic material such as rubber or plastic. 46a to 46d indicate assembly bolt holes. 47 is a petal body formed into a ladle shape by the slit 48.

Figure 2e shows the lower flange hardware 49, 50a~
50d is an assembly bolt hole, and 51 is the through hole 41.
This shows a through-hole with a diameter larger than that of the figure.

The upper flange hardware 36 in FIG. 2a and the elastic tongues 39, 42, 45 in FIGS. to form a one-way hole plug body.

The operation of the one-way hole plug constructed in this way will be explained with reference to FIGS. 3a and 3b.

FIGS. 3a and 3b are partial cross-sectional views when pouring castable refractories, and the one-way plug 100 is concentrically screwed into the opening 52a of the frame 52.

Reference numeral 53 denotes an injection nozzle attached to the tip of the above-mentioned feeding hose. When the injection nozzle 53 is operated in the direction of the arrow 54 and pushed into the stopper 100, it passes through the through hole 41 of the upper elastic tongue piece 39. Middle elastic tongue piece 4
2 and the lower elastic tongue piece 45 are pushed out to enter the space 55 into which the castable refractory is to be injected, as shown in FIG. 3b. Therefore,
Castable refractories are injected from the injection nozzle 53, and each elastic tongue piece 3 between the upper and lower flange metal fittings 36, 49 is
9, 42, 45 are arrows 56 due to their combined functions.
Since it has a very strong resistance against pressure from the direction, there is almost no possibility that the press-fitted castable refractory will leak into the external space 57. According to the findings of the present inventors, there is no leakage at all when the injection nozzle 53 is inserted, and a very small amount of leakage may occur immediately after the injection nozzle is pulled out, but it has been confirmed that the leakage disappears in an extremely short time. It was done. This leakage condition was also the case when large static pressures were present in the castable refractory.

This function is based on the use of a one-way opening plug body equipped with a valve body made by overlapping a plurality of elastic tongues, and its one-way valve action allows the curable fluid material to be transferred between the frames or between the frames. The cured product or the cured coating can be formed by effectively injecting the cured product into the space consisting of the material and the material to be coated.

Now, when pouring a hardening fluid material such as a castable refractory, details of a means for inserting a vibration imparting body through a plug to improve the packing density of the refractory are shown in FIGS. 4a and 4b.

Such vibrations are applied in exactly the same manner as for the injection nozzle.

That is, as described in detail with reference to FIG. 1, a vibrator 58 such as an electromagnetic or air vibrator is plunged into the castable refractory 59 injected through the plug 100 to impart vibration. In this case, as in the case of the injection nozzle, almost no leakage occurs from the stopper 100.

〔Example〕

Next, the method of the present invention will be explained with reference to FIG. 5, which shows an example in which the method of the present invention is used to form a monolithic refractory lining, that is, a hardened coating, for a torpedo car.

The figure is a schematic partially cutaway vertical cross-section showing the lining work procedure in the torpedo car 60, and shows 61a
~61h determines the lining thickness with a spacer refractory installed inside the iron shell 62, and the frame 63
It has the function of supporting A sufficient number of spacer refractories 61a to 61h are provided so as not to impair the flow of the castable refractories and to perform the supporting function of the frame 63.

A sufficient number of one-way hole plugs shown as 64a to 64c are fixed over the entire circumference of the frame 63 to inject the castable refractory and apply the vibration described above.

Support frames 65a and 65b support the frame 63, and the frame 63 is pressed against the spacer refractories 61a to 61h by a stretching device (not shown), such as hydraulic pressure, air pressure, mechanical or electrical jacks, and injection It has a function of sufficiently supporting the frame 63 against the static pressure of the castable refractory.

The frame body 63 and the support frames 65a and 65b are of a disassembly and assembly type and are made of metal materials such as steel plates and aluminum plates, as well as materials such as plastics and fiber-reinforced plastics.

Now, after the frame body 63 and the support frames 65a and 65b have been assembled, castable refractories are injected from the stopper 64c using the feed hose 68 connected to the castable refractories supply device 67 on the work floor 66. Let's do it.

This injection may be carried out sequentially by selecting any stopper in the length direction of the torpedo car 60, or may be carried out using a plurality of feeding hoses. The injection amount is controlled using an injection control pumping device 69.
Next, a worker 74 connects an electromagnetic vibrator 75 that is powered by a conductive cable 73 connected from a power supply 71 on the work floor 70 via a control device 72.
As described above, the vibrator is inserted into the castable refractory through a suitable stopper, and vibration is applied.

After the castable refractories have solidified, the frame 63 and support frames 65a and 65b are dismantled, and the furnace opening 7 is disassembled.
Export from 6.

〔Effect of the invention〕

In the present invention, when a curable fluid material is injected to form a cured body or a cured coating, it is possible to form a cured body or a cured coating body that is dense and robust.

Furthermore, it is particularly efficient and inexpensive when used in tasks where injection is difficult or vibration application is difficult.

The present invention is not limited to the above-described embodiments, and has a wide range of applications, such as being applicable to pouring cement, concrete, plastic, etc.

[Brief explanation of drawings]

Fig. 1 is a schematic explanatory diagram when the method of the present invention is used for ladle lining construction, Figs. 2 a to e are perspective views of each member of the valve body of the one-way hole plug according to the present invention, and Fig. 3 a , b and FIGS. 4a and 4b are explanatory diagrams of the function of the one-way hole plug body, and FIG. 5 is an explanatory diagram of the working procedure when the method of the present invention is used for torpedo car lining construction. FIG. 6 is a schematic explanatory diagram of a construction procedure for a well-known ladle lining. 1... Pit, 2... Bottom working floor, 3a, b...
...Support plate, 4...Ladle, 5...Permanent brick, 6a, b...Beam support column, 7...Beam,
8a, b... Sliding shaft, 9a, b... Position moving screw fitting, 10... Frame, 11a... Outer cylinder, 11b... Inner cylinder, 12a, b, c... Vibrator, 13 ...Opening/closing valve, 14...Injection hole, 15...
...Exhaust hole, 16...Canopy, 17...Space, 18
a, b... Clamp fitting, 19... Frame, 20
a, b... Support column, 21... Beam, 22a, b
...Clamp device, 23a-f...One-way opening plug body, 24a, b...Mounting flange, 25...Feeding hose, 26...Castable refractory pressure feeding device,
27...Space, 28...Worker, 29...Electric vibrator, 30...Castable refractory, 31
... Vibrator, 32 ... Conductive cable, 33 ... Power supply device, 34 ... Guide hole, 35 ... Guide hole, 36
... Upper flange hardware, 37a-d... Assembly bolt hole, 38... Penetration guide hole, 39... Upper elastic tongue piece, 40a-d... Assembly bolt hole, 41... Through hole, 42... Middle elastic Tongue piece, 43a-d...assembly bolt hole, 44...tear, 45...lower elastic tongue piece, 46a-d...assembly bolt hole, 47...petal body, 48...tear, 49...lower flange Hardware, 50a-d... Assembly bolt hole, 51... Penetration guide hole, 100... One-way hole plug, 52...
Frame body, 52a...Opening, 53...Injection nozzle, 5
4...Arrow, 55...Space, 56...Arrow, 57
... External space, 58 ... Vibrator, 59 ... Castable refractory, 60 ... Torpedo car, 61a
~h...Spacer refractory, 62...Iron skin, 63
... Frame body, 64a, b ... One-way hole plug body, 65
a, b...Support frame, 66...Working floor, 67...Castable refractory supply device, 68...Feeding hose, 69...Injection control pressure feeding device, 70...Working floor, 71...Power supply device, 72...control device, 73
... Conductive cable, 74 ... Operator, 75 ... Electromagnetic vibrator, 76 ... Furnace mouth.

Claims (1)

[Scope of Claims] 1. A method for forming a cured body or a cured coating by injecting a curable fluid material into a space between frames or between a frame and a coated body, wherein any of the frames or the coated body A cured body or a cured coating is formed by providing a one-way hole plug in the part, and injecting the curable fluid material or inserting the vibration imparting body through the plug, individually or simultaneously. Method. 2. A method for forming a cured body or a cured coating according to claim 1, using a one-way open plug body having a valve body formed by overlapping a plurality of elastic tongue pieces.