JPS62110846A - Supporting device for ingot outlet of moving mold type continuous casting machine - Google Patents

Abstract

PURPOSE:To improve the safety of a casting operation by disposing gas injection ports for forming gas curtains to a casting machine in the position nearer the casting machine side from cooling water injection ports. CONSTITUTION:Knife blocks 11 and frames 12 are provided to a supporting device 10 for the outlet of the casting machine, and rollers 13, 14 to grasp an ingot 5 are attached to the respective blocks and frames. Conduit ports 15 and grooves 16 for injecting cooling water and air to the ingot 5 are respectively disposed to the top and bottom surfaces of the blocks 11. The air injection ports 16 are provided on the casting space 3 side of the casting machine than the cooling water injection ports 15 and are constituted of U-shaped recesses to enclose the ports 15. The gases ejected from the ports 16 form the gaseous curtain to prevent the splashing and intrusion of the cooling water into the casting machine. The safety of the casting operation is thus improved.

Description

[Detailed description of the invention] [Industrial use! INF ] The present invention relates to a slab outlet support device for a moving mold type continuous casting machine.

[Prior Art] An endless track type continuous casting machine will be explained with reference to FIG. 5 as an example of a moving mold type continuous casting machine. In the casting machine illustrated in FIG. 5, a pair of endless tracks 2 formed by connecting a plurality of block molds 1 in a loop shape are arranged vertically facing each other, and each endless track 2.2 has a The block molds 1.1 of the endless track 2 are combined to form a continuous casting space 3 in which the front and rear ends in the moving direction of the block mold 1 are open,
Molten a4 is injected from the rear end opening of this casting space 3.

The slab 5 drawn out as the block mold 1 moves is removed from the front end opening.

On the slab outlet side of such a casting machine, the slab 5 coming out of the casting machine is placed into upper and lower block molds 1. A support device (also referred to as a "knife device") 6 is provided for separating and supporting the device 1 . This support device 6 is provided with a cooling water injection nozzle for cooling the slab 5 which has unsolidified material inside the solidified shell and is led out of the machine in a state where the strength is still insufficient. There is.

[Problems to be Solved by the Invention] In the above equipment, the cooling water injected from the support device 6 to the slab 5 may adhere to the block mold l and be directly sent to the molten metal injection side, or the cooling water may be sent to the block at the slab outlet side. Mold l and slab 5
If moisture enters the molten metal inlet side through the gaps, it will cause serious problems.

In view of the above points, the present invention provides that the cooling water sprayed from the support device and the scale peeled off by the cooling water are
To provide a support device that does not scatter onto a block mold or enter a casting machine through a gap between a block mold and a slab.

[Means for Solving the Problems] In order to solve the above problems, the support device of the present invention is characterized in that a gas injection port for forming a gas curtain is provided closer to the casting machine than the cooling water injection port. There is.

[Function] In the support device configured as described above, by forming a gas curtain with the gas injected from the injection port, scattering or intrusion of cooling water into the casting machine is prevented.

[Example] Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 4.

Figure 1 is a side sectional view showing the details of the slab outlet side of a continuous track type casting machine. , the lower part mainly shows the air system. Also, Figure 2 is a view taken along the line ■-■ in Figure 1, and Figures 3 and 4 are III-F in Figure 1, respectively.
It is an arrow view of the IT line and the IV-IV line.

In these figures, ■ indicates the block mold that constitutes the endless track;
IO is a support device of the present invention. Since the overall outline of this casting machine is the same as that shown in FIG. 5, the overall description thereof will be omitted.

The support device 10 has a knife block 11 and a frame I2 on the upper and lower sides, and the knife block 11 and the frame 12 each have rollers 13.1 that clamp the slab 5.
4 has been taken.

The knife block 11 has a triangular cross section that matches the slab outlet space, and is deeply inserted into the deep part of the slab outlet space so as to sandwich the slab 5 from above and below. i.e. the upper knife block II
is on its lower surface, and the lower knife block 11 is on its upper surface,
Inlets and grooves 15 and 16 are provided for injecting cooling water and air into the slab 5, respectively.

FIG. 2 shows the top surface of the lower knife block 11. As shown in this figure, two systems of recesses are formed on the rectangular upper surface of the knife block jl, one of which is connected to the cooling water injection port 1.
5. The other side is an air injection port 16. Air injection port 1
6 is provided on the casting machine side, that is, on the casting space 3 side with respect to the cooling water injection port 15, and is constituted by a U-shaped recess that surrounds the cooling water injection port 15. By injecting air from the air injection port and the groove 16, an air curtain is formed that prevents the cooling water injected from the cooling water port 15 from going to the casting machine side. The upper knife block 11 also has a similar structure.

Further, as shown in FIG. 1, cooling water channels 17 and air passages 18 are formed inside the knife block 11 to guide cooling water and air to the cooling water injection ports and grooves 15 and the air injection ports 16, respectively. has been done.

In FIG. 1, the upper knife block 11 has a cooling channel 17, and the lower knife block 11 has an air passage 18.
However, the structures of the cooling water passage 17 and the air passage I8 are the same in the upper and lower knife blocks. In addition, the first
The reference numeral 19 in the figure is a cover for preventing the cooling water from scattering, and the cooling water falls onto the lower cover 19 and is discharged. Further, 20 in FIGS. 2 and 3 indicates a Zyd roller.

In the above configuration, when the slab 5 drawn out as the block mold 1 is moved is supported by the Zaboto device IO, cooling water is injected from the cooling water injection 1'' 15 to the slab 5, but the air Since an air curtain is formed between the casting machine and the casting machine by the air simultaneously injected from the injection ports 16, the cooling water is blocked by the air curtain and does not enter the casting machine.

In the above embodiment, air is injected, but a gas other than air, such as N or gas, may be used.

[Effects of the Invention] From the above explanation, according to the present invention, a gas curtain is formed with the gas injected from the gas injection port provided on the casting machine side rather than the cooling water injection port, so that the scattering of cooling water into the casting machine is prevented. It is possible to prevent intrusion and intrusion, making operations safer.

[Brief explanation of drawings]

FIG. 1 is a side sectional view of a main part of an embodiment of the present invention, and FIGS. 2, 3, and 4 are lines ■-■ and III-I in FIG. 1, respectively.
FIG. 5 is an overall side view showing an example of a conventional moving mold type continuous casting machine. ■...Block mold, 2...Infinite track, 4...Molten metal, 5...Slab, 10...
...Support device, 11...Knife block, 1
2... Frame, 13.14... Roller,
15... Cooling water injection port, 16... Air injection port, 17... Cooling water channel, 18...
Air passage, 19...Cover. Applicant Ishikawajima Harima Heavy Industries Co., Ltd. Nippon Kokan Co., Ltd. Figure 3 Figure 5

Claims (1)

[Claims] In a slab outlet support device that is installed at the slab outlet of a moving mold type continuous casting machine and injects cooling water into the slab drawn out from the casting machine, a gas curtain is formed on the casting machine side from the cooling water injection port. A slab outlet support device for a moving mold type continuous casting machine, characterized in that it is equipped with a gas injection port.