Process Practice for Bearing Steel GCr15 Produced by 60 t BOF-LF (VD) -150 mm x 150 mm Casting Flow Sheet

王文虎; 李冰; 郑高立; 许军民; 姚书芳

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Process Practice for Bearing Steel GCr15 Produced by 60 t BOF-LF (VD) -150 mm x 150 mm Casting Flow Sheet

更新时间：2026-01-21

- Process Practice for Bearing Steel GCr15 Produced by 60 t BOF-LF (VD) -150 mm x 150 mm Casting Flow Sheet
- Special Steel Vol. 32, Issue 5, Pages: 38-40(2011)
- 作者机构：
  
  1. 河南济源钢铁(集团)有限公司,济源,454650
  2. 钢铁研究总院连铸技术国家工程研究中心,北京,100081
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：28 March 2011，
  
  Online First：02 November 2022，
  
  Published：02 November 2011
- 稿件说明：
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王文虎, 李冰, 郑高立, et al. Process Practice for Bearing Steel GCr15 Produced by 60 t BOF-LF (VD) -150 mm x 150 mm Casting Flow Sheet[J]. Special Steel, 2011, 32(5): 38-40.
DOI：

王文虎, 李冰, 郑高立, et al. Process Practice for Bearing Steel GCr15 Produced by 60 t BOF-LF (VD) -150 mm x 150 mm Casting Flow Sheet[J]. Special Steel, 2011, 32(5): 38-40. DOI：

摘要

济源钢铁公司采用60 t顶底复吹转炉高拉碳操作法

控制转炉终点[C

]

0.08%～0.20%

出钢过程钢包底吹氩并加铝铁脱氧

LF采用CaO-Al

-SiO

高碱度渣精炼

连铸钢水过热度20～30℃

M+F电磁搅拌

全程吹氩保护浇铸

铸坯堆垛缓冷工艺生产150 mm×150 mm GCr15轴承钢铸坯。实践表明

GCr15轴承钢的氧含量为(6.3～11.9)×10

-6

平均氧含量为9×10

-6

连铸坯的低倍组织良好。

Abstract

The 150 mm x 150 mm casting billet of bearing steel GCr15 is produced at Jiyuan Iron and Steel Co by using 601 top and bottom combined blowing converter melting with carbon catch operation to control converter end [C

]

0.08% ~0.20%

ladle bottom argon blowing and adding aluminium-iron in ladle during tapping for oxidation

using CaO- Al

-SiO

high basicity slag in LF refining

controlling casting liquid overheating degree 20 ~ 30 ℃

M + F electromagnetic stirring

whole process argon shielding casting and casting billet stacking slow cooling process. Practice results show that the oxygen content in bearing steel GCr15 is (6.3 x 11.9) x 10

-6

average oxygen content is 9 x 10

-6

and the macro structure of casting billet is better.

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