大规格调质材残余应力测试分析及稳定调质工艺

Test analysis of residual stresses in large- scale quenched and tempered steel to stabilize quenching and tempering process

孙雪翠，李艾

北满特殊钢有限责任公司

摘　要: 42Cr Mo系列≥Φ500mm大规格调质锻材回火后锯切时夹锯及锯切至心部产生炸裂,通过残余应力测试后,观察各向应力数值差值较大,且分布不均衡,经过系统分析明确锯切时开始夹锯、最后炸裂问题产生的根本原因、稳定调质工艺,包括水温、水冷时间、水冷后返热温度、回火冷却速度,回火快冷后补充回火。
关键词: 轴向切向应力值；冷却速度；水温；回火冷却速度
分类号: TG156
出　处: 《冶金与材料》2014年第6期，第 16-22 页（共 7 页）
出版日期: 2014-12-15
知网数据: 下载 67 次，被引 1 次（截至 2026-09-29）

Abstract: Clamping saw happened in cutting and burst accrued in cutting to the core in large size forging and tempering steel of 42CrMo series with diameter more than 500 mm after tempering. Through the residual stress testing,there was larger residual stresses difference,distribution of which was uneven. By systematic analysis,the fundamental reasons that clamping saw happened in cutting and burst accrued in cutting to the core were found. Finally process measures had been adopted,such as,stabilizing quenching and tempering process,including water temperature,water cooling,heating temperature after water cooling,tempering cooling speed,and supplementary tempering after fast cooling of supplementary tempering.
Keywords: axial and tangential stress value; cooling speed; water temperature; cooling speed of tempering

“知网全文（电脑版）”需登录中国知网或在已订购知网的机构 IP 内访问；“知网公开页”无需登录即可查看摘要，并可按知网规定下载全文。