60CrMnMo锻造轧辊脱肩原因分析  

Analysis on the Reason of Shoulder Falling Off for 60CrMnMo Forged Roll

作　　者：马正伟[1] 谷国刚 谷国华 赵丽明[1] 

机构地区：[1]山东泰山钢铁集团有限公司新材料研究所,山东271100

出　　处：《大型铸锻件》2014年第2期15-16,共2页Heavy Casting and Forging

摘　　要：通过对60CrMnMo锻造轧辊脱肩样品的一系列分析,明确了其开裂原因。轧辊在生产过程中吊空冷时间长、晶界析出脆性碳化物、冷却速度快、体积变化大、淬火应力大,形成淬火裂纹并造成锻件开裂。Through a series of analysis on the off-the-shoulder specimen of 60CrMnMo forged roll , we have deter-mined the reasons for rupture .In the production process , long hanging air cooling time leads to the separation of brittle carbides on the grain boundary , fast cooling speed causes great change in volume , great quenching stress is the reason for the formation of crack , which also contributes to the rupture .

关 键 词：60CrMnMo轧辊 脱肩 晶界脆性碳化物 淬火裂纹 

分 类 号：TG156.3[金属学及工艺—热处理]