KR20030044717A - Apparatus for emergent cutting of billet in continuous casting process - Google Patents

Abstract

PURPOSE: An emergency billet cutting apparatus for continuous casting process is provided to efficiently and quickly cut a billet in an emergency so as to prevent the continuous casting process from being broken off, secure the laborer's safety, and enhance the product quality. CONSTITUTION: The emergency billet cutting apparatus for continuous casting process comprises a guide(1) which is movably mounted on a rail(2) and has a reciprocal gear(3) and a ring(11) for inserting a torch, a jack(7,7a) for moving the rail(2) up and down, a rotational gear(13) engaged with the reciprocal gear(3) so as to enable the reciprocal gear(3) to move at the same speed as the billet transferring speed when moving down along the rail, a spring(5) for biasing the gear(3) such that the gear(3) returns to the original position after the reciprocal gear(4) moves according to drawing of the billet.

Description

Billet emergency cutting device for continuous casting facility {APPARATUS FOR EMERGENT CUTTING OF BILLET IN CONTINUOUS CASTING PROCESS}

The present invention relates to an apparatus for emergency cutting the billet as needed in the billet production process using the continuous casting equipment.

In continuous casting facilities, the molten steel in the liquid state is cooled as it passes through the mold to form a billet of a certain shape, and is drawn at a constant speed by pressing the pinch roll. Billet drawn in this continuous casting process is cut to a certain length (8000mm, 10000mm) and sent to the post-process.

As illustrated in FIG. 4, the cutting of the billet 100 to be drawn is generally performed by a TCM (Torch Cut Machine) device, and the TCM device may be damaged due to various reasons such as equipment trouble due to high heat, poor gas supply, and a worker's monitoring hall. In the case where the cutting is impossible to occur in this case, in the conventional case, the worker is holding the manual torch 130 and the billet 100 is drawn in a state in which the height and angle of the billet 100 and the torch 130 are adjusted. The emergency cutting operation was performed while moving in the direction in which the billet 100 was drawn at a speed. However, in this case, the length of the manual torch 130 is about 4000 mm, and the operator lifts it and cuts the billet drawn while adjusting the height and angle of the moving torch 130 in the direction of the speed at which the billet 100 is drawn. Skilled and very difficult task.

In addition, if the cutting of the billet 100 is not made within a certain section and time due to the subsequent billet 100 is continuously drawn out, it leads to the casting stop of the strand, the continuous casting stop situation occurs.

In addition, in order to minimize the casting time delay and unscheduled to increase the casting speed of the other strands above the standard, which is the cause of equipment accidents, has a profound effect on the quality of the draw billet (100).

Therefore, in the present invention, when the above-mentioned emergency situation occurs during continuous casting operation, when the manual torch and the billet cutting work are to be used, the speed and the angle as well as the height between the torch nozzle and the draw billet are adjusted in the drawing direction of the billet. The purpose is to provide a billet emergency cutting device for continuous casting equipment that can cut the billet efficiently and quickly, thereby preventing casting interruption and contributing to stable operation and equipment accident prevention, quality improvement and worker safety. .

1 is a perspective view of a device according to the invention,

Figure 2 is a perspective view of the operating state of the present invention,

Figure 3 is a perspective view showing the installation of the present invention,

Figure 4 is a perspective view showing a conventional billet emergency cutting operation state.

Explanation of symbols on the main parts of the drawings

1: guide 2: rail

3: forward and backward gear 4: gear support

5: spring 6,6a: support plate

7,7a: jockey 8: roll

9: cutting rail 10,10a: cutting guide

11: Torch insertion ring 12, 12a: Fixing plate

13: rotating gear 14: shaft

15: coolant line 16,16a: solenoid valve

17 support guide 18 coolant supply line

19: drain line 100: billet

110: drive roll 120: separation prevention guide

130: Tochi

Hereinafter, with reference to the accompanying drawings, the present invention for achieving the above object will be described in detail.

In the device of the present invention illustrated in Figs. 1 to 3, the guide 1 is rectangular in front and rear, and the rail 2 is inserted and assembled, and the rail 2 is supported at both ends thereof. It is fixedly supported by the plates 6 and 6a.

The forward and backward gears 3 are assembled at the lower end of the guide 1 so that the upper part is in close contact with the lower part of the rail 2, and the lower toothed gear teeth are formed.

The forward and backward gear support 4 is a pipe-shaped round bar, one side of which is inserted into the support guide 17 and the other of which is fixed to the gear 3 and the upper end.

The spring 5 is inserted into the support 4 and the support plates 6 and 6a are fixed to the left and right ends of the rail 2 in a U-shape.

The jockeys 7 and 7a are assembled under the support plates 6 and 6a, and the rotating gear 13 is connected to one side of the roll 8 through the shaft 14.

The cutting rail 9 is inserted into the cutting guides 10 and 10a in a U-shape to be fixed to the guide 1, and the cutting guides 10 and 10a are open in the form of pipes. .

The torch insertion ring 11 is assembled and fixed between the cutting guides 10 and 10a.

The fixing plates 12 and 12a are assembled to the bottom of the jockey 7,7a in the shape of a square iron plate, and are used for fixing the jockey 7,7a, and the gear 13 is rolled by the shaft 14. 8) is installed and connected. In addition, the cooling water supply lines 15 and 18, the drain line 19, etc. are provided as shown, and the solenoid valves 16 and 16a are assembled and installed in the cooling water supply line 18 and the drain line 19, respectively. do.

The support guide 17 is pipe-shaped, and the front and rear sides are open and are fixed to one side upper portion of the rail 2.

In operation, when the billet cutting position reaches the installation point of the device, if the billet cutting by the TCM device is not possible due to equipment trouble, gas supply failure, operator's watch station, etc. during billet drawing in the continuous casting process Turn the switch down.

At this time, as the solenoid valve 16 installed in the coolant supply line 18 is opened, the solenoid valve 16a of the drain line 19 is closed to allow the coolant inside the jockey 7, 7a to escape.

When the coolant flows out of the jockeys 7 and 7a, it is down by the load of the forward and backward rails 2 so that the forward and backward gears 3 mesh with the rotary gears 13 and guide in the drawing speed and direction of the billet 100. (1) is moved (Fig. 2).

The distance of the torch 130 head 130 to the torch insertion ring 11 is maintained at 30mm ~ 40mm and the angle between the cast and the torch is maintained at 90 °.

When the torch 130 is gradually pulled toward the operator, the cutting guides 10 and 10a cut the billet 100 while crossing the billet 100 on the cutting rail (FIG. 3).

When the billet 100 is cut, the switch is turned up.

At this time, as the solenoid valve 16 installed in the coolant supply line 18 is opened, the solenoid valve 16a of the drain line 19 is closed to supply coolant to the magnetic elements 7 and 7a.

By the pressure of the cooling water, the rail 2 is raised to its original position and the forward and backward gear 3 is separated from the gear 13.

The forward and backward gear 3 and the guide 1, which have been moved in the drawing direction of the billet 100, are returned to their original positions by the spring 5 installed on the support 4 (Fig. 1).

Therefore, the present invention can perform the cutting operation quickly and efficiently with the above-mentioned action during the emergency cutting of billet drawn in the continuous casting process, to prevent the breakage of casting caused by uncut billet to promote stable operation and productivity improvement It also provides the effect of preventing the occurrence of facility accidents and safety accidents.

Claims (1)

A guide (1) which is movably mounted on the rail (2) and has a cutting rail (9) having forward and backward gears (3) and a torch insertion ring (11), and the rail (2) A jockey 7 and 7a for raising and lowering operation, and a rotary gear 13 which is engaged with the forward and backward gear 3 when descending along the rail 2 to move the gear 3 at the same speed as the drawing speed of the billet. And a spring (5) for returning the gear (3) to its original position after the movement along the drawing billet of the forward and backward gear (3).