80t复吹转炉-LF-CC流程生产65Mn弹簧钢的工艺实践  

Process Practice for Spring Steel 65Mn Produced by 80t Combined Blown Converter-LF-CC Flow Sheet

作　　者：陈文满 文敏 廖明 肖时平 胡兵 张杰新 

机构地区：[1]重庆钢铁股份有限公司,重庆400084

出　　处：《特殊钢》2009年第1期52-53,共2页Special Steel

摘　　要：通过高拉碳补吹氧操作,控制转炉终点[C]≥0.08%,[P]≤0.015%,[S]≤0.03%;控制LF渣碱度3.0～3.5,LF末进行Ca包芯线处理,全程保护浇铸,电磁搅拌,钢水过热度15～30℃,使65Mn弹簧钢(%:0.64～0.69C、0.95～1.10Mn)平均T[O]达到22.7×10^(-6),钢中P含量为0.011%～0.020%,S含量为0.004%～0.015%,力学性能和组织均达到标准和使用要求。With process practice such as using catch carbon-reblow oxygen practice, controlling converter end [C]≥0. 08%, [P]≤0. 015% and [ S]≤0. 03%, controlling LF refining slag basicity 3.0 - 3.5, carrying out Ca clad wire feeding at LF end, shielding casting during while process, electromagnetic stirring, liquid steel overheating 15 -30 ℃, the average T[O] of spring steel 65Mn （0. 64% -0. 69% C, 0.95% - 1.10% Mn） was 22. 7×10^-6, p content in steel was 0. 011%-0. 020% , S content in steel was 0. 004% -0. 015%, and the structure and mechanical properties of steel met the requirement of standard and application.

关 键 词：65Mn弹簧钢 复吹转炉LF 小方坯连铸 

分 类 号：TF729[冶金工程—钢铁冶金] U465.11[一般工业技术—材料科学与工程]