BSW T15钢的真空热处理  

Vacuum heat treatment process of BSW T15 steel

作　　者：刘俊祥 尹承锟 何龙祥 丛培武 徐跃明 Liu Junxiang;Yin Chengkun;He Longxiang;Cong Peiwu;Xu Yueming(Beijing Research Institute of Mechanical&Electrical Technology Ltd.,Beijing 100083,China;China Machinery Huanyu Certification and Inspection Co.,Ltd.,Beijing 102609,China)

机构地区：[1]北京机电研究所有限公司,北京100083 [2]中机寰宇认证检验有限公司,北京102609

出　　处：《金属热处理》2020年第7期94-96,共3页Heat Treatment of Metals

基　　金：国家重点研发计划(2018YFB2001904)。

摘　　要：利用真空淬火回火设备、洛氏硬度计及扫描电镜,研究了淬火温度和回火温度对BSW T15钢真空高温淬火后性能的影响,并分析了BSW T15钢高温淬火时开裂的原因。结果表明,淬火温度从1200℃降低10℃后,表面硬度保持在62.5~64.5 HRC范围内,畸变量减小且有效防止了淬火开裂;采用合适的回火温度、合理的工装方式及优化的工艺,畸变量降低至0.15 mm,BSW T15钢的热处理工艺指标均满足工艺要求。Effects of quenching temperature and tempering temperature on the properties of BSW T15 steel after vacuum high temperature quenching were studied by means of vacuum quenching and tempering equipment,Rockwell hardness tester and scanning electron microscope,and the cracking reason of the BSW T15 steel during high temperature quenching was analyzed.The results show that the surface hardness is kept in the range of 62.5-64.5 HRC by reducing the quenching temperature by 10℃from 1200℃,and the distortion variable is reduced and the quenching cracking is effectively prevented;the distortion variable is reduced to 0.15 mm by adopting appropriate tempering temperature,reasonable tooling and optimized process,and the heat treatment process indexes of the BSW T15 steel meet the process requirements.

关 键 词：粉末冶金高速钢 高温淬火 畸变量 开裂 

分 类 号：TG156[金属学及工艺—热处理]