摘要
从转炉出钢到连铸各个关键工序,采用示踪的方法系统研究了淮钢长流程(转炉-精炼-真空处理-连铸-轧制)生产的轴承钢中非金属夹杂物来源,重点对精炼、真空处理、连铸3个关键工序钢液中非金属夹杂物情况进行取样分析。结果表明,淮钢长流程生产的轴承钢非金属夹杂物类型为氧化铝、钙铝酸盐、镁铝尖晶石和二氧化硅,非金属夹杂物主要来源于精炼内生、二次氧化和精炼搅拌卷渣或连铸钢包下渣,其中大颗粒非金属夹杂物主要来源于钢包卷渣或连铸钢包下渣,大颗粒非金属夹杂物类型主要为铝酸钙。
Aiming at the key processes from converter tapping to continuous casting,the source of non-metallic inclusions in bearing steel produced by the long process(LD-LF-RH-CC-CR)of Huaigang were systematically studied by means of tracer techniques.The sampling and analysis of non-metallic inclusions in the three key processes(LF-RH-CC)were focused on.It was found that the inclusion type was alumina oxide,calcium aluminate,magnesia alumina spinel and silica in the bearing steel.The non-metallic inclusion mainly came from refining endogenous,secondary oxidation,refining stirring slag entrapment or the outflow slag at ladle in continuous casting.And the large non-metallic inclusion was caused the stirring slag entrapment in refining and outflow slag at ladle in continuous,whose type was mainly calcium aluminate.
作者
梁佰战
LIANG Bai-zhan(Technology Center,Huaigang Special Steel Co.,Ltd.,Jiangsu Shagang Group,Huai'an 223002,Jiangsu,China)
出处
《中国冶金》
CAS
北大核心
2020年第7期68-72,77,共6页
China Metallurgy
关键词
示踪技术
轴承钢
非金属夹杂物
来源
tracer techniques
bearing steel
non-metallic inclusion
source
