An intelligent method for judging the surface quality of cold-rolled strip steel
A cold-rolled strip, surface quality technology, applied in image analysis, image enhancement, instruments, etc., can solve problems affecting the accuracy of intelligent judgment, and achieve the effect of accurate inclusion of length and width information, improved accuracy, and broad application prospects.
Active Publication Date: 2022-07-19
PANGANG GRP XICHANG STEEL & VANADIUM CO LTD
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Problems solved by technology
[0003] After the cold-rolled strip is rolled, the surface inclusion defects will extend and elongate along the rolling direction, and the defects will be disconnected (such as figure 1 As shown), it does not exist in a continuous straight line, so that the surface quality inspection instrument will detect this one inclusion defect as several inclusions and output (such as figure 2 shown); at the same time, the surface inclusions will extend and elongate along the rolling direction. , the surface quality detector will detect it as other defects such as: streaks, scratches and other defect outputs (such as image 3 shown); this seriously affects the accuracy of intelligent judgment
Method used
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Embodiment
[0061] A surface quality detector was used to detect the surface defects of the cold-rolled strip; the detection results showed a number of inclusion defects, which were intermittent. Through direct statistics, the longest inclusion was only 300mm.
[0062] After the polymerizable inclusions are polymerized by the above technical solution of the present invention, the maximum length obtained is 1400 mm, and the stability of the length-width polymerization defect results is 20 mm (the threshold of stability is 40 mm), and the degree of cohesion is 30% (the threshold of cohesion is 30%). is 20%), which meets the requirements in this scenario, so the aggregation is reasonable; finally, it is determined that the steel coil does not meet the requirements according to the inclusion defects of this length, which avoids the occurrence of quality accidents.
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The present invention provides an intelligent method for judging the surface quality of cold-rolled strip steel, comprising the following steps: a) after summarizing the obtained arbitrary defect information, performing defect aggregation, and outputting the defects after aggregation; the defect aggregation method is length and width Aggregation; b) Judging the surface quality of the cold-rolled strip according to the output defects after polymerization. Compared with the prior art, the intelligent judging method for the surface quality of cold-rolled strip steel provided by the present invention can realize reliable and effective aggregation of inclusion defects on the surface of cold-rolled strip steel, thereby providing more accurate inclusion length and width information and improving intelligence. Judgment accuracy. The method for determining the aggregation of "inclusion" defects provided by the present invention is the first in the intelligent determination of the surface quality of cold-rolled strip steel, lays a foundation for the intelligent determination of the surface quality of cold-rolled strip steel, and can be popularized and used in the field of cold-rolled strip. with broadly application foreground.
Description
technical field [0001] The invention relates to the technical field of surface quality inspection of cold-rolled strip steel, and more particularly, to an intelligent determination method for the surface quality of cold-rolled strip steel. Background technique [0002] The judgment data of the intelligent judging system for the surface quality of cold-rolled strip comes from the surface quality detector. In the traditional manual inspection and judgment process, combined with the detection results of the surface quality inspection instrument, the inspection results are magnified several times and then according to the actual situation, it is an inclusion defect, but the surface quality inspection instrument detects several inclusions and determines after artificial aggregation. [0003] After the cold-rolled strip is rolled, the surface inclusion defects will extend and elongate in the rolling direction, and the defects will be broken (such as figure 1 shown), it does not c...
Claims
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IPC IPC(8): G06T7/00G06T7/136G06T7/187
CPCG06T7/0006G06T7/136G06T7/187G06T2207/30136
Inventor 王波陈俊刘挺金成
Owner PANGANG GRP XICHANG STEEL & VANADIUM CO LTD