热轧型钢轧辊的断裂行为分析及对策

热轧型钢过程中经常发生轧辊断裂现象,断裂部位主要在轧辊的孔型处、辊颈处及辊颈与辊身交界处.分析了轧辊产生断裂的原因,认为断辊主要是由轧辊材质热处理回火不充分或存在铸造缺陷、轧辊冷却不良及轧制操作不当引起的,并从技术和管理两个方面提出了相应的控制措施.

Analysis and countermeasure for fracture forms of rolls in hot rolling section steel

Roll fracture often takes place in hot roiling section steel. The fracture position is mainly located at the roll caliber, roll neck and boundary between the roll neck and roll body. The causes of roils fracture are analysed. The fracture of roils results from inadequate heat treatment temper of roils or existing foundry defects in roils, ill roll cooling and improper operation during roiling. Meanwhile, the corresponding measures from the aspects of technology and management are put forward.