On-line optimizing shearing method of roller milling large plate

Abstract

The invention discloses a on-line optimizing cutting method of rolling board, it uses flat surface detecting device and on-line ultrasonic detection equipment to roll shape of big board and detect inner defect before snip head, and using cutting line course computer to transform detected shape data of rolling big board and inner defect data to image and displayed on operation interface and setting cutting position and defect avoiding to accomplish cutting of big board. The on-line optimizing cutting method resolves effectively problem that rolling big board with defects on head and trail needs manpower detection or finished board possesses defect of head and trail, it fits for continuous operation, and increasing cutting production capability and steel lumber ratio.

Description

technical field [0001] The invention relates to a forming process for smelting and rolling steel plates, and more specifically refers to an on-line optimized shearing method for rolling large plates. Background technique [0002] In the production process of the steel plate in the steel industry, it is necessary to shear the large plate that is basically rolled and formed. However, defects such as internal cracks and shrinkage cavities in rolled slabs are mainly distributed at the head and tail of rolled slabs. At present, domestic and foreign thick plate manufacturers only consider the shear line in their shearing strategies for rolled slabs. The inspection data of the planar shape of the rolled slab before shearing does not consider whether there are internal and external defects (such as cracks, holes, etc.) on the rolled slab before shearing. In this way, it is possible to find that there are flaw detection defects on the finished board after cutting out the finished bo...

AI Technical Summary

Problems solved by technology

However, defects such as internal cracks and shrinkage cavities in rolled slabs are mainly distributed at the head and tail of rolled slabs. At present, domestic and foreign thick plate manufacturers only consider the shear line in their shearing strategies for rolled slabs. The inspection data of the planar shape of the rolled slab before shearing, regardless of whether there are internal and external defects (such as cracks, holes, etc.) on the rolled slab before shearing

In this way, it is possible to find flaw detection defects on the finished board after cutting out the finished board through offline

[0003] If the steel plate is found to have internal defects by the on-line ultrasonic flaw detection equipment (UST) after shearing, the manufacturers either continue to cut out the finished plate and then add offline manual flaw detection to the finished plate, or directly go offline to conduct offline inspection of the rolled large plate. Manual flaw detection, but because the large plate has been sheared, the loss is irreparable at this time

[0004] For large rolled slabs with internal defects found in online flaw detection, if internal defects are found in off-line manual flaw detection after cutting out the finished slab, the finished slab will be judged inferior or scrapped, thus affecting the yield of the steel plate; When the slab is hoisted off the production line for offline manual flaw detection, it will interrupt the production rhythm of the shearing line and affect the shearing efficiency of the production line

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