大规格风电轴承钢G20Cr2Ni4A的开发  

Development of bearing steel G20Cr2Ni4A with large size for wind power

作　　者：穆立峰[1] 马永强[1] 李涛[1] 孙常亮[1] 韩冬[1] 

机构地区：[1]抚顺特殊钢股份有限公司技术处,辽宁抚顺113001

出　　处：《钢铁研究》2015年第1期57-59,共3页Research on Iron and Steel

摘　　要：介绍了抚顺特殊钢公司通过快锻工艺制造Φ400～700mm大规格风电轴承钢的生产实践。通过控制钢中残余元素、VD精练结束前高拉铝、采用保护气氛浇注、使用保护气氛电渣炉生产及墩拔锻造工艺等,使渗碳轴承钢G20Cr2Ni4A的w（Ti）≤0.003%,w（Al）为0.015%～0.050%,w（O）≤0.001 5%,w（Sn）≤0.03%,w（As）≤0.04%,w（Sb）≤0.015%,w（Pb）≤0.02%,w（Ca）≤0.001%,w（Bi）≤0.02%,且钢中夹杂物及低倍组织处于较好水平,渗碳轴承钢晶粒度、性能、探伤等指标完全适合风电轴承套圈的使用要求。The practice of bearing steel with large size（diameterΦ400-700 mm）for wind power produced by high-speed forging process in Fushun Special Steel Co.,Ltd.was described.By controlling the residual elements in steel,feeding aluminum cored wire before leaving VD,adopting protective atmosphere for ingot casting,using inertprotective ESR for production and pulling-forging process,the contents of some elements in carburizing bearing steel G20Cr2Ni4 A were as follows：w（Ti）≤0.003 %,w（Al）was 0.015 %-0.050 %,w（O）≤0.001 5 %,w（Sn）≤0.03 %,w（As）≤0.04 %,w（Sb）≤0.015 %,w（Pb）≤0.02 %,w（Ca）≤0.001 %,w（Bi）≤0.02 %.The inclusions and macrostructure in steel were kept at high level.The grain size,mechanical properties and ultrasonic inspection of the carburizing bearing steel were fully meet the requirement of wind-power bearing rings.

关 键 词：风电轴承钢 钛控制 快锻工艺 

分 类 号：TG142[一般工业技术—材料科学与工程]