1. Cold- rolling Department， Shougang Jingtang United Iron and Steel Co., Ltd., Tangshan 063200, Hebei， China 2. Department of Automotive Engineering, Tangshan Industrial Vocational Technical College, Tangshan 063299, Hebei, China
Abstract：The function, composition and application status in cold rolled 2 230 hot dip galvanized line in Shougang Jingtang of the dual sensor surface detection system were summarized. The technological superiority, use characteristics and application value of the dual sensor surface detection system were described in detail. According to the surface statement and quality requirement of the product, the material group and classification of the galvanized products were optimized, which greatly improved the detection ability and the classification levels. The characteristics and differences of several typical surface defects were analyzed by the line scan field cameras and matrix scan field cameras, which increased the cognition and detection ability of the important defects such as warping, hole, inclusion, zinc slag, small dent, scratch and so on. As a result, the accuracy of the judgment of the surface quality of galvanized steel strip was greatly improved, and at the same time, it played an important role in improving the process and technology of hot dip galvanized line.
2017, Vol. 27 
