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对管线钢L245热轧卷边部裂纹缺陷产生原因进行了分析,并研究了此钢种高温热塑性行为,认为钢种特性是导致热轧卷边部裂纹缺陷产生的根本原因,但通过合适的工艺制度可以减少该缺陷的产生。
The cause of the crack on the hot-rolled hemming of L245 pipeline steel was analyzed and the high-temperature thermoplastic behavior of the steel was studied. It is considered that the characteristics of the steel species are the root cause of the crack defects in the hot-rolled hemming. However, The system can reduce the defects.