冷轧轧机支承辊辊面剥落原因与应对策略  

Spalling Failure Analysis and Countermeasure of Back-up Roll for Cold Mill

作　　者：龙再祥 LONG Zai-xiang(Cold rolling mill of Southwest Aluminum Group Co.LTD,Chongqing 400000,China)

机构地区：[1]西南铝业集团有限责任公司冷轧厂,重庆400000

出　　处：《世界有色金属》2020年第13期52-53,共2页World Nonferrous Metals

摘　　要：本文对我厂1#轧机支承辊剥落原因进行了分析,结果表明,疲劳是导致支承辊剥落的主要原因。由于接触点应力集中导致辊面疲劳裂纹,疲劳裂纹持续发展最终导致剥落。Spalling failure had taken place on back up roll for no.1 mill in our factory.Through spalling fracture analysis,it was proved that main causes for roll’s spalling were contact fatigue.The spalling fracture of the back-up roll is caused by the fatigue crack in the surface layer due to the stress concentration at the contact point.

关 键 词：冷轧 支承辊剥落 疲劳裂纹 

分 类 号：TG333.17[金属学及工艺—金属压力加工]