Abstract：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.
梁佰战. 转炉轴承钢非金属夹杂物来源分析[J]. 中国冶金, 2020, 30(7): 68-72,77.
LIANG Bai-zhan. Analysis on source of non-metallic inclusions in bearing steel produced in LD process[J]. China Metallurgy, 2020, 30(7): 68-72,77.
2020, Vol. 30 
