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1.引言在热轧工作辊(简称WR)表面上经常有龟裂存在,因此研究裂纹的扩展及其原因对于防止剥落等损伤是很有益的。在与支承辊(简称BUR)及轧材接触的应力下,裂纹
1. INTRODUCTION Cracks often appear on the surface of hot work roll (WR), so it is helpful to study crack propagation and its causes to prevent flaking and other damage. Cracks in the contact with the backup roll (BUR) and the rolling stock