Control of Oxygen Content in Bearing Steel GCr15 Steelmaking by 100 t Converter- LF (VD) Process

刘跃; 吴伟; 刘浏; 赵继宇; 吴建鹏; 李小明; 王建国

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Control of Oxygen Content in Bearing Steel GCr15 Steelmaking by 100 t Converter- LF (VD) Process

更新时间：2026-01-21

- Control of Oxygen Content in Bearing Steel GCr15 Steelmaking by 100 t Converter- LF (VD) Process
- Special Steel Vol. 26, Issue 6, Pages: 47-49(2005)
- 作者机构：
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- Received：06 June 2005，
  
  Online First：13 April 2023，
  
  Published：13 April 2005
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刘跃, 吴伟, 刘浏, et al. Control of Oxygen Content in Bearing Steel GCr15 Steelmaking by 100 t Converter- LF (VD) Process[J]. Special Steel, 2005, 26(6): 47-49.
DOI：

刘跃, 吴伟, 刘浏, et al. Control of Oxygen Content in Bearing Steel GCr15 Steelmaking by 100 t Converter- LF (VD) Process[J]. Special Steel, 2005, 26(6): 47-49. DOI：

摘要

通过铁水预脱硫-100 t顶底复吹转炉-吹Ar-LF(VD)-方坯连铸工艺生产轴承钢的实践

得出冶炼终点钢水碳含量为0.2%~0.6%时

钢水氧含量在50×10

-6

到150×10

-6

之间;经出钢时脱氧、吹氩、LF(VD)精炼后

中间包钢水中的全氧含量为(14~16)×10

-6

铸坯中的全氧量

12×10

-6

。分析表明

加强熔池搅拌

使钢渣充分反应

控制转炉下渣量

5 kg/t钢

加强吹氩搅拌

控制LF顶渣碱度在2.0~2.5之间

(FeO)+(MnO)小于0.5%

可使轴承钢中全氧量进一步降低。

Abstract

Through practice of bearing steel producing by hot metal pre-desulfurization - 100 t top and bottom combined blown converter - Ar stirring - LF(VD) - billet concasting process

it was obtained that with melting end point carbon between 0.2% and 0.6%

the oxygen content in steel was between 50 X 10

-6

and 150 X 10

-6

by deoxidation in tapping

Ar stirring and LF(VD) refining

the total oxygen content in molten steel in tundish was between 14 x 10

-6

and 16 x 10

-6

and was less than 12 X 10

-6

in cast billet. The analysis results show that it is available to further decrease the total oxygen content in bearing steel by intensifying bath stirring to make steel-slag enough react

and controlling BOF tapping slag amount less than 5 kg/t steel

intensifying Ar stirring

and controlling LF top slag basicity between 2.0 a

nd 2.5 and (FeO) + (MnO) less than 0.5% .

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