Effect of microstructure and shearing parameter on the edge crack defect in the SPHC steel with lower carbon content during cold rolling process
WANG Lin1,YU Yang1,WANG Chang1,CHEN Jin2,XU Hai-wei1,JIAO Hui-li2
1. Sheet Metal Research Institute, Shougang Research Institute of Technology, Beijing 100041， China 2. Technology and Quality Division, Shougang Qian’an Steel Company, Qian’an 064404， Hebei, China
Abstract：The reason was studied for the edge crack defect in the SPHC steel with lower carbon content during cold rolling process in Qian’an Steel Company. The result shows that the coarse and mixed crystals in the edge of strip which was caused by excessive temperature drop in the edge during finishing rolling process, and the poor shearing quality which was caused by mismatch of shearing parameters were the reasons for the edge crack defect in the SPHC steel with lower carbon content during cold rolling process. By adjusting the cooling water system during finishing rolling process and matching shearing parameters reasonably, the defect was solved effectively.
王林，于洋，王畅，陈瑾，徐海卫，焦会立. 边部组织及切边工艺对低碳SPHC冷轧边裂的影响[J]. 中国冶金, 2014, 24(09): 15-21.
WANG Lin,YU Yang,WANG Chang,CHEN Jin,XU Hai-wei,JIAO Hui-li. Effect of microstructure and shearing parameter on the edge crack defect in the SPHC steel with lower carbon content during cold rolling process. China Metallurgy, 2014, 24(09): 15-21.
2014, Vol. 24 
