JP2877339B2 - Check scarf method and device - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a check scarf method on a continuous casting plant and an apparatus for carrying out this method.

[Conventional Technology and Problems to be Solved] In a continuous casting process, it is necessary to perform a check scarf operation on a cast piece that is cast and conveyed on a line to check a material. This check scarf operation is for detecting inclusions under the surface of the cast slab, cracks, pinholes, oscillation marks, and the like. Conventionally, this work has been performed manually by removing it from the line.

By the way, when performing this work in a continuous casting line, this work section is a line until the slab is discharged from the continuous casting machine to reach the gas cutting machine, or after cutting the slab by the gas cutting machine, the slab is lined It has been conceived to carry it to the other side and perform it there. However, in the former case, this section is widened, which is disadvantageous in terms of space, and in the latter case, there is waste in extending the line.

The present invention has been devised in view of these problems, and can perform a check scarf using existing equipment without considering an increase in lines (equipment).
It is another object of the present invention to provide an efficient check scarf method that can be performed within a current time schedule by operating a check scarf device in cooperation with a gas cutting machine.

Another object of the present invention is to provide a check scarf device which can effectively carry out the above method, does not require complicated operations, and is advantageous in terms of equipment space.

[Means for Solving the Problems] According to the check scarf method of the present invention for achieving the above object, when performing a check scarf on a continuous casting line, a check scarf device is provided after a gas cutting machine on the line. Arranging and performing a check scarf from the tip end face of the slab conveyed by the check scarf device during gas cutting of the cast slab by the gas cutting machine, and at the end of the check scarf, the check scarf device and the gas cutting machine. And then the check scarf device is guided to a standby position by a gas cutting machine.

Further, the check scarf device of the present invention, within the travel range of the slab cutting machine arranged on the continuous casting line, while providing a check scarf gantry so that it can run in the same direction as the cutting machine, the gantry, It is equipped with a check scarf crater that can be moved and raised and lowered in the slab width direction, a slab clamp device, and a slab end face detector, and a buffer mechanism is installed on the front of the gantry on the cutting machine side. And

[Example] Next, the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing the arrangement of a gas cutting machine and a check scarf device according to the present invention on a continuous casting line, FIG. 2 is a diagram when gas cutting is started, and FIG. FIG. 4 is a view when the check scarf has been completed but the check scarf has been completed, and FIG. 4 is a view when the check scarf device has been guided by the gas cutting machine to move its position and the gas cutting has been completed at the same time.
FIG. 5 is a perspective view showing an embodiment of the check scarf device according to the present invention, and FIG. 6 is a partially enlarged view of FIG.

In FIG. 1, the left end shows the exit side of the continuous casting machine 1, and the cast slab 2 is sent to the right at a constant speed on the roll conveyor 3 of the conveying device by the force of a pinch roller (not shown). Rails 4 are laid on both sides of the roll conveyor 3, and a gas cutting machine 5 is provided on the rails so as to straddle the slab 2.
And a check scarf device 6 are arranged.

As shown in FIG. 5, for example, the check scarf device 6 is provided so as to be able to travel on the same rail 4 as the cutting machine within the travel range of the gas cutter 5 arranged on the continuous casting line. Check scarf base 6A and the base
A check scarf crater 12 which is movable in the slab width direction by a movement motor 16 and a lifting and lowering cylinder 17 mounted on a 6A, and is capable of holding and releasing the slab 2 in a width direction by a cylinder 18. It is composed of a piece clamp 11 and a cast piece end face detector 9. Furthermore, on the front of the base 6A on the cutting machine side,
A cushioning mechanism for cushioning the impact when the cutting machine 5 and the check scarf device 6 come into contact with each other, such as a shock absorber
14 and a deceleration limit switch 19 for issuing a deceleration command to a traveling motor (not shown) built in the gantry 6A immediately before the collision.

As shown in FIG. 6, the shock absorber 14 has a head provided with a spring 20 with which a protruding portion provided on the cutting machine 5 contacts.
21, a cylinder 22 for holding the head 21 in an adjustable manner,
It comprises a gas cutter 5 and a latch mechanism 24 which clamps the latch arms 23A, 23B projecting from the check scarf device 6 when the latch arms come into contact with each other. The latch mechanism 24 is moved up and down by a cylinder 25 attached to the gantry 6A.

The members and mechanisms of the check scarf device are not limited to those shown in the drawings, but may be replaced with any other appropriate structure and method as long as they perform the same function.

Next, a case where actual cutting and check scarf work is performed using the illustrated equipment will be described.

When the slab 2 passes under the gas cutting machine 5 located at a fixed position (origin) and is sent to the position of the end face detector 7 provided in the gas cutting machine, the length from the slab end face is measured by the length measuring device 8. Measurement is started. The end face of the slab 2 is a check scarf device 6
Then, the end face is detected by the end face detector 9 provided at that position, the cylinder 18 of the check scarf device 6 is operated, and the clamp 11 clamps the side of the end face. The check scarf device 6 synchronizes with the slab and moves rightward on the rail at a speed of 0.8 to 2.5 m / min, which is the slab feed speed, by clamping.

On the other hand, the gas cutting machine 5 is at the origin and waits for gas cutting until the predetermined length to be cut is measured by the length measuring machine 8. When the movement of the slab 2 reaches a predetermined length,
Clamp mechanism of gas cutting machine 5 receiving command from length measuring device 8
10 is pressed down to press the surface of the slab 2 and the slab 2 and the gas cutting machine 5 are integrally tuned to the right, and simultaneously cast along the dashed line in FIG. Start gas cutting from one side. Note that the distance a between the end face detector 7 and the cutting torch is added to the length measuring device 8 in advance.

The gas cutting machine 5 starts gas cutting at a speed of 0.5 to 2 m / min. At the same time, the clamp mechanism 11 of the check scarf device 6 is released, and the check scarf device 6 is moved at a speed of 15 to 30 m / min. Then, the check scarf by the check scarf crater 12 is started in the direction in which the gas cutting machine is located, leaving a check scarf mark 13 shown in FIG.

Further, as shown in the above figures, the check scarf speed is higher than that of the gas cutting, so that the check scarf ends in the middle of the gas cutting as shown in FIG.
At the end of the check scarf, the shock absorber 14 provided in the check scarf device is gently brought into contact with the gas cutting machine 5. Just before contact, limit switch
Of course, the speed of the check scarf device 6 is reduced by the signal from 19.

Thereafter, the check scarf device 6 is guided by the gas cutting machine 5 and moves on the rail until reaching the position shown in FIG. 4 where the gas cutting is completed.

When the gas cutting is completed, the cutting torch 15 returns in the width direction of the slab 2, and the gas cutting machine 5 returns to the origin shown in FIG. Also, the check scarf device 6 changes its position to the left and subsequently detects the casting end face by its end face detector,
The side of the end face of the slab is clamped using a clamp mechanism (the state of FIG. 1). The length measuring device 8 continuously measures the length of the slab, transmits the measured length from the new end face after cutting to the gas cutting machine 5, starts the gas cutting again, and starts the check scarf. .

[Effects of the Invention] As described above, according to the method of the present invention, a check scarf operation can be performed efficiently and reliably on a continuous casting line without using extra equipment and with a conventional production time schedule. The industrial benefits are huge.

Further, according to the apparatus of the present invention, there are advantages that the above-described method can be smoothly performed without any trouble, and that the operation is simple.

[Brief description of the drawings]

FIG. 1 is a layout view of each device for implementing the check scarf method of the present invention on a continuous casting line, FIG. 2 is a diagram at the time of starting gas cutting in the equipment of FIG. 1, and FIG. 3 is a check scarf operation. FIG. 4 is a view at the end of gas cutting, FIG. 5 is a perspective view showing an embodiment of the check scarf device according to the present invention, and FIG. 6 is a partially enlarged view of FIG. . DESCRIPTION OF SYMBOLS 1 ... Continuous casting machine, 2 ... Cast piece, 3 ... Roll conveyor, 4 ... Rail, 5 ... Gas cutting machine, 6 ... Check scarf device, 7 ... End face detector, 8 ... Length measurement Vessel, 9 ...
... End face detector, 10,11 ... Clamp mechanism, 12 ... Check scarf crater, 13 ... Check scarf cutting trace, 14
…… Shock absorber, 15… Cutting torch, 16… Motor for movement, 17… Cylinder for lifting and lowering, 18 …… Cylinder,
19 ... Deceleration limit switch.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Fuminosuke Shioda 4-29-5 Taito, Taito-ku, Tokyo Inside Sping Co., Ltd. (72) Masao Taniyama 4-29-5 Taito, Taito-ku, Tokyo In Japan Sping Co., Ltd. (56) References JP-A 60-1575 (JP, U) JP-A 59-58557 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) B22D 11 / 16 104 B23K 7/06 B22D 11/126

Claims (2)

(57) [Claims] 1. In performing a check scarf on a continuous casting line, a check scarf device is arranged following a gas cutting machine on the line, and the check is performed during gas cutting of a cast steel material by the gas cutting machine. Perform a check scarf from the front end surface of the steel material transported by the scarf device,
A check scarf method, wherein the check scarf device is brought into contact with the gas cutting machine at the end of the check scarf, and thereafter the check scarf device is guided to a standby position by the gas cutting machine. 2. A check scarf base is provided so that it can run in the same direction as the cutting machine within a travel range of a slab cutting machine arranged on a continuous casting line, and the base is provided with a check scarf width direction. A check scarf device comprising a movable and vertically movable check scarf crater, a slab clamp device, and a slab end face detector, and a buffer mechanism installed on the front side of a gantry on the cutting machine side.