JPH044061B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a continuous thin cast slab casting machine, and in particular, when the heat insulating material provided on the fixed plate of the continuous thin slab casting machine is damaged, The present invention relates to a mold having a structure that allows rapid replacement.

(Prior Art) Conventionally, typical thin slab continuous casting machines include a type that uses a pair of rotating metal belts and a type that uses a pair of rotating rolls.

In the former continuous thin slab casting machine, as shown in FIG.
The back surfaces of the metal belts 1 and 2 are supported by a belt support frame 8. Further, tapered short side molds 4 and 5 are arranged at both ends of the metal belts 1 and 2 to form a casting space, and molten metal is injected into this casting space from a nozzle 6 to cast a thin slab 7. It is something.

As shown in FIG. 4, the latter twin-roll continuous thin slab casting machine forms a casting space with a pair of rotating rolls 10 and tapered short-side molds 4 and 5, and a nozzle is placed in this space. A thin slab 7 is cast by pouring molten metal from 6.

(Problems to be Solved by the Invention) In these thin slab continuous casting machines, the formation of the solidified shell on the short side mold side must be delayed compared to the formation of the solidified shell on the metal belt or roll side. For this purpose, as shown in FIGS. 3 and 4, a heat insulating material 9 is provided on the surface of the short-side mold that comes into contact with the molten metal, and the heat insulating material 9 is held by a fixing plate 5', and both are integrally It has a structure. The heat insulating material of this short-side mold must be replaced because it is damaged by sliding with the metal belt or roll or by erosion due to molten metal. When replacing the short-side mold,
After taking out the entire short-side mold, it took 2 to 5 hours to set it up again because the gap between it and the metal belt or roll had to be adjusted. This is currently causing a significant loss of productivity.

SUMMARY OF THE INVENTION An object of the present invention is to provide a short-side mold that can be replaced in a short time if the heat insulating material of the short-side mold is damaged by a metal belt or roll or molten metal.

(Means for Solving the Problems) As shown in FIGS. 1a and 1b, the present invention provides a short side mold with a heat insulating material 9 that contacts the molten metal supplied into the casting space, and a heat insulating material 9 that is fixed. It is composed of a surface plate 11 that holds the surface plate 11 and a fixed plate 12 that fixes and holds the surface plate 11. The surface plate 11 and the fixed plate 12 can be attached and detached by moving the surface plate 11 in the vertical direction together with the heat insulating material 9. This is a possible combination format.

The heat insulating material 9 of this short-side mold may be fixed to the surface plate 11 by inserting it into the fixing groove 15 provided in the surface plate 11 as shown in FIG. 1b, but it may also be fixed with adhesive or the like. Also good. By fixing and holding the heat insulating material 9 to the surface plate 11 in this way, the heat insulating material 9
Inadvertent damage to the heat insulating material 9 when replacing the heat insulating material 9 can be prevented. The surface plate 11 may be introduced along a guide groove 19 provided in the fixed plate 12, as shown in FIG. Thereafter, the surface plate 11 to which the heat insulating material 9 is fixed is detachably fixed to the fixed plate 12 by the connecting pins 17.

In addition, the surface plate 11 to which the heat insulating material is fixed is attached to the fixed plate 1.
2, there is a cylinder shown in FIG. 1c. In this case, fixing plate 1
By pulling the protrusion 21 provided on the surface plate 11 with the rod of the cylinder 20 attached to the
The surface plate 11 is fixed to a fixed plate 12.

In addition, as shown in FIG. 1a, a cooling water hole 13 is provided inside the surface plate 11, and the cooling water hole 13 is connected to a cooling water pipe 14 provided on the fixed plate 12, so that the surface plate 11 is It may also be cooled.

(effect) Next, the operation of the present invention will be described.

If the insulation of the short side mold is damaged by a metal belt or roll, connect pin 1 as shown in Figure 1b.
7 is pulled out, a hook is hung on the hanging piece 18 fixed to the surface board 11, and only the surface board 11 is removed. Fixed plate 1 after removing the surface plate 11
2 is held between metal belts or rolls in the state shown in FIG. 2, and the gap between this fixing plate and the metal belt or rolls is maintained in an already adjusted state. Thereafter, the surface plate 11 to which the new heat insulating material is fixed is inserted and fixed to the fixed plate 12 by the connecting pins 17.

Since only the surface plate to which the heat insulating material is fixed is replaced in this way, the time required to replace the short-side mold can be shortened.

Moreover, this short side mold is shown in FIGS. 1a and 1b.
As shown in the figure, the width of the slab can also be changed by connecting it to a movable rod 16 such as a cylinder so that the metal belt or roll surface can be moved in parallel.

(Effect of the invention) As explained above, conventionally it took 2 to 5 hours to replace the short side mold, but according to the present invention, it took 10 to 5 hours to replace the short side mold.
It can be shortened to 15 minutes.

[Brief explanation of drawings]

FIG. 1a is a sectional view of a short-side mold for a continuous thin slab casting machine of the present invention using a metal belt;
Figure b is its external view, Figure 1c is a diagram showing an embodiment of the present invention in which the surface plate is fixed to the fixing plate, and Figure 2 is
Figure 3 shows a fixed plate after removing the surface plate, Figure 3 shows a metal belt type continuous thin slab casting machine, and Figure 4 shows a twin roll type continuous thin slab casting machine. . 1, 2...metal belt, 3a, 3b, 3c, 3'
a, 3'b, 3'c... Drive roll, 4, 5... Short side mold, 5'... Fixed plate, 6... Injection nozzle, 7... Slab,
8...Belt support metal frame, 9...Insulating material, 10...Roll, 11...Surface plate, 12...Fixing plate, 13...Cooling water hole, 14...Cooling water pipe, 15...Fixing groove, 16...
Movable rod, 17...Connection pin, 18...Hanging piece, 1
9...Guiding groove, 20...Cylinder, 21...Protrusion.

Claims (1)

[Claims] 1. A pair of rotating bodies facing each other with an interval between them;
It has a pair of short-side molds that are wide at the top and gradually taper toward the bottom, and the pair of short-side molds are sandwiched between each end of the rotating body to form a casting space. In the thin slab continuous casting machine, the short-side mold has a heat insulating material in contact with the molten metal supplied into the casting space, a surface plate that fixes and holds this heat insulating material, and a fixing plate that fixes and holds this surface plate. A continuous casting machine for thin slabs, characterized in that the surface plate and the fixed plate are of a combination type in which the surface plate can be moved in the vertical direction together with the heat insulating material to be attached and removed.