Investigation on Cleanliness of GCrl5 Bearing Steel Produced by 120t BOF-LF-RH-CC Process

王昆鹏; 王海洋; 徐建飞; 赵阳; 林俊; 万文华; 王郢

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Investigation on Cleanliness of GCrl5 Bearing Steel Produced by 120t BOF-LF-RH-CC Process

更新时间：2026-01-21

- Investigation on Cleanliness of GCrl5 Bearing Steel Produced by 120t BOF-LF-RH-CC Process
- Special Steel Vol. 42, Issue 2, Pages: 14-17(2021)
- 作者机构：
  
  中天钢铁集团有限公司技术中心,常州,213011
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：13 April 2022，
  
  Published：13 April 2021
- 稿件说明：
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王昆鹏, 王海洋, 徐建飞, et al. Investigation on Cleanliness of GCrl5 Bearing Steel Produced by 120t BOF-LF-RH-CC Process[J]. Special Steel, 2021, 42(2): 14-17.
DOI：

王昆鹏, 王海洋, 徐建飞, et al. Investigation on Cleanliness of GCrl5 Bearing Steel Produced by 120t BOF-LF-RH-CC Process[J]. Special Steel, 2021, 42(2): 14-17. DOI：

摘要

对“120 t BOF-LF-RH-CC”流程GCrl5轴承钢的洁净度研究结果表明

LF精炼结束以A1

• MgO尖晶石和Al

-MgO-CaO夹杂为主

RH真空处理后

- MgO尖晶石几乎全部消失，钢中夹杂物以液态钙铝酸盐为主

T.0含量降至5.3x10

-6

浇注过程中间包重新成Al

- MgO

尖晶石;RH终点和中间包钢水以及连铸坯未发现≥20um钙铝酸盐夹杂。

Abstract

Cleanliness in GCrl5 bearing steel produced by 120 t BOF-LF-RH-CC process investigated results show that the inclusions dominated in steel are Al

. MgO spinel and Al

-MgO-CaO type after LF refining and the Al

• MgO spinel is almost disappeared and the inclusions in steel are mainly liquid calcium aluminate after RH treatment. T. 0 content decreases to 5. 3 X 10

-6

after RH treatment and Al

• MgO spinel regenerates in tundish liquid during casting

and the ≥20um calcium aluminate inclusions are not found in liquid at end RH and tundish

and in casting bloom.

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