JPS6111705B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for removing torch sag from the melt-cut side surface of a width-divided steel slab, and more specifically to a steel slab obtained by dividing a steel slab into widths in the longitudinal direction (hereinafter simply referred to as width-divided slabs). The present invention relates to a removal device that can automatically remove torch sag adhering to the lower surface of a fusion-cut side surface of a slab, and automatically traces and removes any warpage or the like on the bottom surface of a width-divided slab.

In general, there are cases where it is necessary to cut a steel billet produced in a continuous casting facility or a blooming facility, that is, a so-called slab, in the longitudinal direction and divide it in the width direction, and this cutting is generally performed by fusing or the like. ing. For example, when receiving an order for a slab with a small width, it would be uneconomical to produce the slab according to the width by continuous casting or by using a small ingot mold, as productivity would drop. For this reason, slabs with a width twice the order width are produced using continuous casting or large ingot molds, and a gas cutter is run along the longitudinal center line of the double width slab to cut it into two pieces. It is being divided into slabs to produce custom-sized slabs.

Torch sag adheres to the lower surface of the welded side surface of this width-divided slab, and if it is rolled without removing it, the torch sag will get stuck and leave a permanent scar, so it is necessary to remove this before rolling. ing.

However, since this removal is aimed at torch sag on the side surface of the melt, it is difficult to perform it accurately and automatically, and the reality is that torch sag on the side of the melt is removed by inverting the slab and inputting it.

The present invention provides an apparatus that automatically and accurately removes torch sag (hereinafter simply referred to as sag) attached to the lower surface of the melt-cut side surface of a width-divided slab after longitudinally dividing the width.

Embodiments of the present invention will be described below with reference to the drawings.

In addition, FIG. 1 is a side view of a sagging removal device according to one embodiment of the present invention, FIG. 2 is a front view of a member for detecting and copying the melted side surface of a slab, and FIG. FIG. 4 is an enlarged side view, and FIG. 4 is an explanatory diagram showing the operating mode of the sagging removal device shown in FIG. 1 from a plan view.

First, in Fig. 1, reference numeral 1 indicates a width-divided slab after a continuous cast slab is divided into widths by fusing with a gas-fusion cutter, etc., and this width-dividing slab 1 has one side surface consisting of a fusing side surface 1a; On the lower surface of the fusion-cut side surface 1a, a sag, indicated by the emblem A, is formed and attached in the longitudinal direction when the width is divided. In this state, the width-divided slab 1 is conveyed in the direction of A by the roll 2 of the conveyance table. Further, reference numeral 3 is a dust collection hood, and the hood 3 allows the fusing side surface 1 to be closed as described later.
Collect dust from smoke generated when removing torch sag A attached to the bottom surface of

Next, the traveling carriage 4 is arranged below the bus line of the width-divided slab 1 that is sent by the conveying roller 2. That is, the running rails 4a are provided along the conveyance direction of the width-divided slab 1, and the wheels 4 of the running trolley 4 are
b is run on a running rail 4a, and the running carriage 4 is configured to reciprocate along the conveyance direction of the width-divided slab 1. Furthermore, an alignment truck 5 is placed on top of the traveling truck 4. That is, a running rail 5a is provided on the running truck 4 in the width direction of the width-divided slab 1, so that the wheels 5b of the alignment truck 5 can run on this running rail 5a. In short, the alignment truck 5 moves in the width direction of the width-divided slab 1, and the traveling truck 4 moves in the conveyance direction of the width-divided slab 1. Note that the alignment cart 5 is moved by a cylinder 6,
The reciprocating movement of the traveling carriage 4 is performed by a cylinder 16.

Next, an abutment member 8 is provided at the tip of this alignment cart 5 via a guide frame 10, a cylinder 11, and an elevating member 9. The abutting member 8 abuts against the bottom surface 1b of the width-dividing slab 1 and follows the bottom surface 1b while removing sag, and is constructed as follows. Install.

That is, the guide frame 10 is fixed to the tip of the alignment cart 5, and the elevating member 9 is attached so as to be movable up and down along the guide groove 10a of the guide frame 10.
An abutment member 9 is attached to the tip of this elevating member 9.
A cylinder 11 is interposed between the elevating member 9 and the guide frame 10, and the cylinder 11 moves the abutting member 9 up and down together with the elevating member 9 and the Scarfwa crater 7, thereby converting the abutting member 9 into width-divided slabs. The cylinder 11 moves the abutting member 9 into the width-divided slab 1 during the vertical positioning of the scarf wafer crater 7 by contacting the bottom surface 1b of the slab 1.
The contact member 8 is pressed against the bottom surface 1b of the contact member 8.

Next, as described above, the bottom surface 1b of the width-divided slab 1 is detected and traced by the abutment member 8, and in conjunction with this, the fused side surface 1a is detected and the fused side surface 1a is traced when removing torch sag. The apparatus is constructed as shown in FIG.

That is, a pair of copying members 12a, 12b are rotatably attached around the elevating member 9 via pivot points 12a', 12b', and these copying members 12a, 12
Attach the cylinders 14a and 14b to b, and further,
Guide rollers 13a and 13b are attached to opposite sides of each copying member 12a and 12b. When the fusing side surface detection/copying device is configured in this way, the contact member 8
Together with this, the position of the scarfure crater 7 can be maintained properly with respect to the fused side surface 1a and the lower surface of the width-divided slab 1, and the sag A at the lower part of the fused side surface 1a can be automatically and accurately removed.

Therefore, the operating mode of the sagging removal device having the above configuration will be explained as follows.

First, FIG. 4 shows an example in which the width-divided slab 1 on the right side is carried in the direction of the arrow. When the width-divided slab 1 is carried in in this manner, the torch sag removal device according to the present invention is located below the conveyance path line, and the width-divided slab 1 has its tip surface 1b directly above the torch sag removal device. Stop when you reach it. The fusing side surface detection/side surface copying device operates each cylinder 14a, 14b in a circular motion, and the pair of copying members 12a, 12b is set in advance in a downwardly open state, as shown by dotted lines in FIG.

With the pair of copying members 12a and 12b open, the lifting member 9 is raised by the cylinder 11,
The contact member 8 is brought into contact with the lower surface of the width-divided slab 1, the bottom surface position is detected, and the cylinder 11 is stopped. From this position, the abutment member 8 is lowered by about 10 mm, for example, by contraction of the cylinder 11, and the scarfure crater 7 is maintained at an appropriate position in the vertical direction with respect to the lower surface of the width-divided slab 1.

Next, the alignment cart 5 is moved in the width direction of the width-divided slab 1 by the cylinder 6, in particular, about 100 mm away from the width-divided slab 1, and only one copying member 12b is raised by the cylinder 14b. , until the guide roller 13b at the tip comes into contact with the welded side surface 1a of the width-divided slab 1.
When moving, the fusing side surface 1b of the width-divided slab 1
The appropriate removal side position of the scarfure crater 7 can be determined.

Next, the appropriate position of the scarfure crater 7 with respect to the tip surface 1c of the width-divided slab 1 is determined. That is, the traveling carriage 4 is moved backward along the transport direction A until the scarfure crater 7 is separated from the tip end surface 1c of the width-divided slab 1 to some extent. At this position, the cylinder 14a is operated to raise the other copying member 12a, and while maintaining this raised position, the traveling carriage 4 is advanced, and the other copying member 12a is brought into contact with the tip end surface 1c of the width-divided slab 1. After this contact, the traveling trolley 4
, for example, by about 100 mm, and the scarfure crater 7 is positioned at an appropriate position relative to the tip surface 1c of the width-divided slab 1. Note that, as described above, after the position of the scarfure crater 7 has been determined from the three directions, one of the tracing members 12a is lowered.

Next, as described above, after determining the position of the scarfua crater 7 with respect to the fusing side surface 1a, bottom surface 1b, and tip surface 1c of the width-divided slab 1,
When ignited and moved the width-divided slab 1, the sag A on the fused side surface 1a can be automatically removed. At the start, for example, at about 100mm,
Although one copying member 12b does not follow the fusing side surface 1a of the width-divided slab 1, the width of the width-divided slab 1 is approximately 100 mm.
When it moves forward, it will be followed, and in this state, the sag A will be removed. Similarly, when the width-divided slab 1 moves approximately 100 mm, the cylinder 11 operates and the abutting member 8 is pushed upward, and the width-divided slab 1
The bottom surface 1b of the width-divided slab 1 contacts the bottom surface 1b of the width dividing slab 1.
Touch and imitate. Further, after the removal is completed, one copying member 12b and the elevating member 9 are lowered.
In addition, when removing the sagging of the width-divided slab on the left side instead of the width-divided slab on the right side as described above, the operations of the other copying member 12a and one copying member 12b are reversed, and the other steps are performed in the same manner. Good.

Further, in the torch sag removing device having the above structure, it is preferable to provide a pair of high pressure water injection nozzles 15a and 15b as shown in FIG. That is, when removing torch sag, there is a risk that the removed torch sag will scatter in front of the scarf-a-crater and attach to the dust collection hood 3 or the rollers 2 of the conveyance table. In this regard, the high pressure water injection nozzles 15a, 15
When high-pressure water is injected from b, the removed torch sag is blown away laterally. Further, the abutment member can be configured as a roller.

In the above, the guide frame is provided on the alignment truck, and each copying member is configured to be able to move up and down using the cylinder. It may be constructed so that it can be moved up and down.

[Brief explanation of the drawing]

FIG. 1 is a side view of a sagging removal device according to one embodiment of the present invention, FIG. 2 is a front view of a member for detecting and copying the fusing side surface of a slab, and FIG. 3 is an enlarged side view of a part of FIG. 1. , FIG. 4 is an explanatory diagram showing the operation mode of the sag removing device shown in FIG. 1 from a plan view. Code 1...Slab, 2...Roll, 3...Dust collecting hood, 4...Traveling trolley, 5...Aligning trolley, 6...Cylinder, 7...Skarfa crater, 8...Abutting member, 9...
Lifting member, 10... Guide frame, 11... Cylinder, 12a, 12b... Each copying member, 13a, 13
b...Guide roller, 14a, 14b...Cylinder,
15a, 15b...a pair of high-pressure water injection nozzles, 16
…Cylinder.

Claims (1)

[Claims] 1. In a removal device that removes torch sag attached to the lower part of the melt-cut side of a width-divided steel billet that has been continuously cast or bloom-rolled and divided into widths along the longitudinal direction by gas-cutting, one side of the width-divided steel billet is removed. At the bottom of the conveyance line for the width-divided steel billet, there is a traveling truck that reciprocates along this conveyance line, an alignment truck that moves on this traveling truck in a direction perpendicular to the width-divided billet conveyance line, and A guide frame is fixed to the tip of the alignment cart, and an elevating member is disposed on the guide frame so as to be able to rise and fall freely, and the tip of the elevating member is in contact with the bottom surface of the width-dividing steel piece and is in contact with the bottom surface. A scarfure crater for removing tote sag is attached to the abutting member, and a scarfure nozzle for removing tote sag is attached to the abutting member.Further, around the elevating member, a material is provided, one of which is in contact with the melt-cut side surface and the tip surface of the width-divided steel piece. A device for removing torch sag on a melt-cut side surface of a width-divided steel piece, comprising a pair of copying members that copy the melt-cut side surface while contacting the melt-cut side surface.