JPS6326249A - Cross cutting method for ingot - Google Patents

Abstract

PURPOSE:To reduce an initial cost by disposing a cutter having cutting nozzles atop an ingot then cutting the ingot while moving the same. CONSTITUTION:Liftable jacks 7 are provided and the cutter 3 is preliminarily supported thereon. The ingot 1 carried by table rolls 8 is stopped at the prescribed position and the jacks 7 are lowered to place the cutter 3 on the ingot 1. Side rolls 10 are then touched to the sides of the ingot 1 to set the cutting nozzle 15 at the center of the side rolls 10. While the ingot 1 is conveyed by the table rollers 8, the ingot is cross-cut by the nozzle 15 of the fixed cutter 3. The nozzle 15a is ignited to reverse feed and cut the ingot 1 when the rear end of the ingot 1 comes to the rear cutting nozzle 15a. The continuous cutting of the hot ingot is executed simply by disposing the simple cutter 3 by the above-mentioned method. The initial cost is thus reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for dividing the width of slabs produced in continuous casting equipment, and can also be used in the blooming process.

[Conventional technology]

BACKGROUND ART Conventionally, there are three methods for vertically dividing a slab produced in a continuous casting facility or a blooming facility into two, as shown in FIGS. 2 to 4.

First, in the method shown in FIG. 2, a slab l is transported by a crane and placed on a slab pedestal z, and then a cutting rig 3 is manually installed on the slab 1 to divide it into widths. This method takes time to handle the slab, set up cutting equipment, etc., and it is impossible to cut hot slabs.

The method shown in FIG. 3 is disclosed in Japanese Patent Application Laid-Open No. 58-068458, in which a slab lifter 5 is provided on the blade of the slab conveying table roll 4, and the slab 1 is lifted up by the lifter 5 and cut into a cutting device. Run 3 and cut. During cutting, the cut glue adheres to the roll 4, so watering or the like is carried out while rotating the roll 4. The biggest drawback of this method is that the equipment costs are high.

In the method shown in FIG. 4, the cutting device 3 is fixed (moved when cutting into a PI piece), and the slab 1 is divided into widths while being conveyed by a conveying table roll 4. This method is short and inexpensive, and the width division of the heated slab is done by turning, but it may cause pitching when the slab is warped upwards as shown in Figure 5, or the rolls may be damaged when the slab is warped downwards as shown in Figure 6. I need to get over it. There is a drawback that the cut is interrupted when the pitch exceeds 1.

[Problem that the invention seeks to solve]

As described above, the conventional method has the following problems: 1) It is difficult to continuously divide the hot slab slabs conveyed from continuous casting equipment or blooming equipment into continuous widths.

2) Pitching occurs when the slab is transported and cutting is not possible when it rides over the rolls.

3) Requires high capital investment.

The object of the present invention is to provide a width dividing method that eliminates these drawbacks of the conventional slab width cutting methods.

[Means for solving problems]

The method of the present invention is characterized in that when dividing a slab cast in continuous casting equipment in the longitudinal direction, a cutting device having a cutting tip is placed on the slab and the slab is cut while moving. This is a slab width division method.

[Effect]

If the cutting device is placed on the slab and fixed with a flexible chain or the like, the cutting device can follow the slab, so it is possible to continuously divide the width of the hot slab with a low investment in equipment.

〔Example〕

FIG. 1 shows an example apparatus that can suitably carry out the method of the present invention.

There are jacks 7 on the left and right that can be raised and lowered, and when there is no slab l, these jacks 7 support the cutting device 3.
The figure shows a state in which the cutting device 3 is placed on the slab 1 and the jack 7 is not operating. Nine slabs 1 are conveyed from the left side as viewed in FIG. 1(a) by slab conveying table rolls 8. After stopping the slab 1 at a predetermined position, the jack 7 is lowered and the cutting device 3 is placed on the slab 1. At this time, the receiver of the cutting device 3 causes the side roll 10 to lightly touch the side of the slab 1 with the roll 9 placed on the slab 1. This is done using the air cylinder 11, but by adjusting the air pressure it is possible to touch it lightly.

Side roll 10 is received by roll 12. The amount of movement of the left and right air cylinders 11 is detected and the signal is sent to the Celsin (
By applying this to the synchro electric machine 13, the drive device 14 is driven and the bevel gear 18 and screw 19 are rotated. The rotation speed is determined by a signal given to the cersin 13, and the cutting tip 15 is set in the center of both side rolls 10.

The cutting nozzle 15 is ignited and the slab 1 is conveyed at a predetermined cutting speed, but the cutting device 3 is attached to a fixed beam 17 with a chain 16 and therefore does not travel.

The slab l is transported by the transport table roll 8 and divided into widths, and the rear end of the slab l is cut into a cutting hole 15 on the rear surface.
Stop the slab when it reaches point a.

Thereafter, the cutting nozzle 15a is ignited and the slab is fed back, thereby completely dividing the slab into widths.

After that, open the side roll 10 and use the jack 7 to cut the cutting device 3.
Lift up and transport the slab divided into two parts.

It collapses below.

〔Effect of the invention〕

According to the method of the present invention, slabs conveyed from continuous casting equipment or blooming equipment can be continuously divided into widths in the form of hot slabs, and the investment in equipment is low.

[Brief explanation of drawings]

FIG. 1 shows (L) a front view, (b) a side view, and FIGS.
The figures are (a) a front view and (b) a side view of each conventional apparatus, and FIGS. 5 and 6 are side views of the slab showing the upwardly warped and downwardly warped states of conveyance, respectively. l... Slab 2... Slab holder 3... Cutting device

Claims (1)

[Claims] 1. A casting machine characterized in that when a slab cast in a continuous casting equipment is divided into widths in the longitudinal direction, a cutting device equipped with a cutting tip is placed on the surface of the slab and the slab is cut while moving. How to divide the width of a piece.