An Online Optimal Shearing Method for Steel Plates with Defects

A defect and steel plate technology, which is applied in the field of thick plate shearing production control, can solve problems such as ineffective treatment, reduced steel plate yield, and short steel plate length, so as to reduce the cost of feeding materials and increase the yield of finished products.

Active Publication Date: 2018-10-02
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is used to solve the situation in the existing technology that the defect position is far away from the head and tail of the rolled large plate. When shearing, it will not only cause the short length of the steel plate, but also produce a large number of waste plates, which cannot effectively deal with the defect and greatly reduce the steel plate. The problem of yield rate

Method used

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  • An Online Optimal Shearing Method for Steel Plates with Defects
  • An Online Optimal Shearing Method for Steel Plates with Defects
  • An Online Optimal Shearing Method for Steel Plates with Defects

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] Embodiment 1, the motherboard is the sequential type A-type group board motherboard:

[0077] like Figure 8 As shown in the figure, the rolled large plate consists of 3 sub-plates from 100 to 300. By dividing the area of ​​the mother plate, 100 and 200 belong to one mother plate, and 300 belongs to one mother plate. The defect position is located in the mother plate of 100 and 200. , query the two daughter boards in the motherboard again, find that the defect is located in the 200 daughter board, and then avoid the defect by translating the 200 daughter board, and re-divide the mother board area. At this time, the mother board composed of 100 and 200 is in A rough cutting point is added at the cutting head and cutting, and the tail of the 100 sub-board includes a cutting length at the cutting length, which is used to separate the defective parts.

Embodiment 2

[0078] Example 2, the motherboard is a split-type S-type group board motherboard

[0079] like Figure 9 As shown, the rolled large plate is composed of 6 sub-plates from 100 to 600 in total. By dividing the mother plate area, 100, 200, 400 and 500 belong to a mother plate, and 300 and 600 belong to a mother plate. By querying the motherboard area and defect position, it is determined that the defect is located in the motherboard of 100, 200, 400 and 500, and the four sub-boards 100, 200, 400 and 500 in the defective motherboard are searched again, and 500 is determined as the defective sub-board, The defects are avoided by translating the 500 sub-board, and the mother board area is re-divided. At this time, the cutting head shears only translate the rough cutting point, and the head of the 500 sub-board has a fixed length at the fixed-length shear to separate the defects. part.

Embodiment 3

[0080] Embodiment 3, the motherboard is a fire-cut G-type group board motherboard

[0081] like Figure 10 As shown, the rolled large plate is composed of 7 sub-plates from 100 to 700. By dividing the mother plate area, 100 to 300 belongs to a mother plate, 400 to 500 belongs to a mother plate, and 600 and 700 belong to a mother plate. By querying the motherboard area and defect position, it is determined that the defect is located in the motherboard from 100 to 300, and the three sub-boards from 100 to 300 in the defective motherboard are checked again, and 200 is determined as the defective sub-board, and the defect is removed by translating the 200 sub-board Dodging is done, and the master board area is re-divided, at this time the head shears only translate the rough cut point.

[0082] The optimized shearing method of the present invention effectively avoids defective parts, ensures that all sub-boards can be sheared smoothly, and reduces the cost of feeding materials. ...

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Abstract

The invention relates to an online optimal shearing method for defective steel plates. The shearing method is characterized in that areas of a mother plate are divided, and at least one sub-plate is divided in each mother plate area, so that coordinates of a defect position on a rolling big plate are searched; edge coordinates of all the mother plate areas are inquired, so that the mother plate areas in which defects are distributed can be determined; different shearing strategies are formulated for sequence-type A group plates, partition-type S group plates and flame-cutting type G group plates; and all the defective sub-plates are avoided. In this way, the yield rate of the defective steel plates can be increased, and the feeding cost can be reduced. The method solves the problems in the prior art that the steel plate becomes shorter during shearing if the defect position is far from the head and tail of the rolling big plate; a lot of scrap plates can be generated; defects cannot be processed effectively; and the yield rate of the steel plates is greatly reduced.

Description

technical field [0001] The invention relates to the field of thick plate shearing production control, in particular to an online optimized shearing method for a steel plate with defects. Background technique [0002] In the production process of steel plates in the iron and steel industry, it is necessary to cut the basic rolling and forming large plates, and cut the rolled large plates into contract sub-slabs. Generally, domestic and foreign thick plate factories arrange planes in front of the shearing machine. Shape detection device and online ultrasonic flaw detection equipment. In the past, the shearing strategy of domestic and foreign manufacturers for rolled slabs only considered the plane shape detection data of the rolled slabs before the shearing line, and did not consider whether there are internal and external defects on the rolled slabs before shearing ( Internal cracks, shrinkage holes), the defects are generally located at the head and tail of the rolled large...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23D36/00
Inventor 罗劼黄福明顾豪杰苗雨川
Owner BAOSHAN IRON & STEEL CO LTD
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