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高锰钢板的发纹缺陷产生在钢板次表面,具有隐蔽性。针对用户在使用钢板过程中曾多次发生冷折开裂情况,对不同厚度钢板次表面发纹缺陷及其钢板的生产工艺执行情况进行分析,并结合缺陷检验鉴定结果,确定发纹缺陷的产生与钢坯质量、加热工艺、轧制工艺及轧后冷却等有关。按实际工况提出了一系列改进措施,并应用于实践,发纹缺陷得到了有效控制,取得了较好的效果。
Hairline defects of high manganese steel produced in the steel sub-surface, with concealment. In view of the fact that the user has repeatedly suffered cold cracking during the process of using the steel sheet, the occurrence of hairline defects on the surface of the steel sheet with different thicknesses and the execution of the production process of the steel sheet are analyzed. Combined with the results of the defect inspection and identification, Billet quality, heating process, rolling process and cooling after rolling and so on. According to the actual working conditions, a series of improvement measures are put forward and applied to practice. The defects of hair lines are effectively controlled and good results have been achieved.