Behavior of Non-Metallic Inclusions in GCr15 Bearing Steel Steelmaking by Scrap + Hot Metal-50 t EAF-LF-VD Flow Sheet

杨密平; 吴兵; 林腾昌; 安杰; 马传庆

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Behavior of Non-Metallic Inclusions in GCr15 Bearing Steel Steelmaking by Scrap + Hot Metal-50 t EAF-LF-VD Flow Sheet

更新时间：2026-01-21

- Behavior of Non-Metallic Inclusions in GCr15 Bearing Steel Steelmaking by Scrap + Hot Metal-50 t EAF-LF-VD Flow Sheet
- Special Steel Vol. 35, Issue 4, Pages: 44-47(2014)
- 作者机构：
  
  1. 山东钢铁股份有限公司莱芜分公司特钢事业部,莱芜,271105
  2. 北京科技大学冶金与生态工程学院,北京,100083
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：03 March 2014，
  
  Online First：03 September 2022，
  
  Published：03 September 2014
- 稿件说明：
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杨密平, 吴兵, 林腾昌, et al. Behavior of Non-Metallic Inclusions in GCr15 Bearing Steel Steelmaking by Scrap + Hot Metal-50 t EAF-LF-VD Flow Sheet[J]. Special Steel, 2014, 35(4): 44-47.
DOI：

杨密平, 吴兵, 林腾昌, et al. Behavior of Non-Metallic Inclusions in GCr15 Bearing Steel Steelmaking by Scrap + Hot Metal-50 t EAF-LF-VD Flow Sheet[J]. Special Steel, 2014, 35(4): 44-47. DOI：

摘要

通过50 t EAF配加30~40 t铁水和12~16 t优质废钢

EBT无渣出钢

加150~200 kg钢芯铝预脱氧

LF用SiC扩散脱氧

控制精炼渣碱度4.0~5.9

VD前后软吹氩、连铸保护浇铸和电磁搅拌等工艺措施

GCr15轴承钢轧材中的氧含量为8×10

-6

~9×10

-6

。分析结果表明

LF前至VD后钢中夹杂物尺寸一般≤10μm

最大尺寸40μm

大部分夹杂物尺寸为3~6μm; LF前主要夹杂物为Al

镁铝尖晶石

硫化物

TiO

VD前后为镁铝尖晶石

CaS和MgO。

Abstract

With process measures including charging 30 ~40 t hot metal and 12 〜16 t quality scrap in 50 t EAF

EBT slag free tapping and adding 150 ~200 kg steel-clad aluminum to pre-deoxidize

diffusion deoxidation by SiC and controlling refining slag basicity 4.0 ~6.9 in LF process

soft argon blowing before and after VD

shielding casting and electromagnetic stirring in casting process

the total oxygen content in rolled products of bearing steel GCrl5 is 8 x 10

-9

x 10

-6

. Analysis results show that the size of inclusions in steel before LF and after VD is generally ≤ 10 μm

maximum size is 40 and the sizes of most inclusions are 3 ~ 6 μm; before LF process the main inclusions in steel are Al

magnesia alumina spinal

sulfide

and TiO

before and after VD the main inclusions in steel are magnesia alumina spinal

CaS and MgO.

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