30 t EAF-40 t LF冶炼35MnVS 易切削钢的工艺实践

特殊钢 ›› 2005, Vol. 26 ›› Issue (4): 54-55.

30 t EAF-40 t LF冶炼35MnVS 易切削钢的工艺实践

李艾, 刘光辉 ,朱志欣, 王秀兰

东北特钢集团北满特殊钢有限责任公司，齐齐哈尔161041

收稿日期:2005-02-16 出版日期:2005-08-01 发布日期:2023-05-17
作者简介:李艾(1966-),女，工程师，从事科技管理与推广工作。

Practice of Free Cutting Steel 35MnVS Steelmaking by 30t EAF-40t LF

Li Ai, Liu Guanghui, Zhu Zhixin, Wang Xiulan

Beiman Special Steel Co Ltd,Dongbei Special Steel Group, Qiqjhaer 161041

Received:2005-02-16 Published:2005-08-01 Online:2023-05-17

摘要/Abstract

摘要： 采用30tEBTEAF40tLF(喂线)3.15t铸锭工艺生产35MnVS易切削钢(%):0.33～0.40C,0.30～0.60Si,1.00～1.40Mn,0.06～0.12V,≤0.035P,0.035～0.075S。30炉35MnVS钢的生产结果表明,LF精炼时,喂硫磺粉线前钢中的硫含量为0.007%～0.032%,喂硫磺粉线后钢中硫含量为0.040%～0.071%,喂丝硫的回收率为50%～80%。喂硫线后,再喂入0.3kg/t的铝线,细化钢的晶粒。35MnVS易切削钢成品材的晶粒度为6～7级,钢的机械性能和高、低倍组织均满足标准要求。

关键词: 35MnVS 易切削钢, , LF精炼, 喂线

Abstract: The free cutting steel 35MnVS- 0.33～0.40C,0.30～0.60Si,1.00～1.40Mn,0.06～0. 12V, ≤0.035P,0.035～0.075S was produced by 30 t EBT EAF-40t LF (wire feeding)- 3.15 t ingot casting process. The production results of 30 heats steel 35MnVS showed that the sulphur content in steel after sulphur powder wire feeding was 0.040%-0.071%, while before feeding that was 0.007%～0.032%;and the sulphur yield of wire feeding was 50%~ 80%.The 0.3 kg/t aluminum wire was feeding after sulphur wire feeding to fine the grain size of steel. The grain size rating of 35MnVS products was 6~7, and the mechanical properties, micro- and macro structure met the standard requirements.

李艾, 刘光辉 , 朱志欣, 王秀兰. 30 t EAF-40 t LF冶炼35MnVS 易切削钢的工艺实践[J]. 特殊钢, 2005, 26(4): 54-55.

Li Ai, Liu Guanghui, Zhu Zhixin , Wang Xiulan. Practice of Free Cutting Steel 35MnVS Steelmaking by 30t EAF-40t LF[J]. Special Steel, 2005, 26(4): 54-55.