Intelligent judgment method for cold-rolled strip steel surface quality
A determination method and technology for cold-rolled strip, applied in image analysis, image enhancement, instruments, etc., can solve the problems affecting the accuracy of intelligent determination, and achieve the effect of accurate inclusion length and width information, broad application prospects, and improved accuracy.
Active Publication Date: 2021-04-02
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
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[0061] A surface quality detector is used to detect surface defects of cold-rolled strip steel; the detection results show multiple inclusion defects, which are intermittent in the middle. According to direct statistics, the longest inclusion length is 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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Abstract
The invention provides an intelligent judgment method for the cold-rolled strip steel surface quality, which comprises the following steps: a) summarizing any acquired defect information, performing defect aggregation, and outputting aggregated defects, wherein the defect polymerization mode is length-width polymerization; and b) judging the surface quality of the cold-rolled strip steel accordingto the output polymerized defects. Compared with the prior art, the intelligent judgment method for the cold-rolled strip steel surface quality can reliably and effectively aggregate inclusion defects on the surface of the cold-rolled strip steel, so that more accurate inclusion length and width information is provided, and the accuracy of intelligent judgment is improved. The inclusion defect polymerization judgment method provided by the invention is initiative in intelligent judgment of the surface quality of the cold-rolled strip steel, lays a foundation for intelligent judgment of the surface quality of the cold-rolled strip steel, can be popularized and used in the field of cold-rolled strips, and has a wide application prospect.
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 determination 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 manual 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 ...
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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