Process Practice for Production of Bearing Steel GCr15 by 110 t UHP EAF-LF-RH-CC Flow Sheet

汪国才; 龚志翔

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Process Practice for Production of Bearing Steel GCr15 by 110 t UHP EAF-LF-RH-CC Flow Sheet

更新时间：2026-01-21

- Process Practice for Production of Bearing Steel GCr15 by 110 t UHP EAF-LF-RH-CC Flow Sheet
- Special Steel Vol. 34, Issue 6, Pages: 39-41(2013)
- 作者机构：
  
  马鞍山钢铁股份有限公司特钢公司,马鞍山,243000
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：17 June 2013，
  
  Online First：07 September 2022，
  
  Published：07 September 2013
- 稿件说明：
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汪国才, 龚志翔. Process Practice for Production of Bearing Steel GCr15 by 110 t UHP EAF-LF-RH-CC Flow Sheet[J]. Special Steel, 2013, 34(6): 39-41.
DOI：

汪国才, 龚志翔. Process Practice for Production of Bearing Steel GCr15 by 110 t UHP EAF-LF-RH-CC Flow Sheet[J]. Special Steel, 2013, 34(6): 39-41. DOI：

摘要

马钢特钢公司生产GCr15轴承钢的流程为110 t UHP EBT EAF-120 t LF-RH-Φ380~Φ600 mm圆坯连铸工艺。通过控制EAF终点[C

]

≥0.10%

下渣量≤2.0 kg/t钢

出钢用铝铁预脱氧;LF终渣(/%):50~60CaO、5~6MgO、8~15SiO

、15~20Al

RH 67 Pa时间≥10 min

连铸结晶器、铸流、凝固末端电磁搅拌等工艺措施

使钢中总氧含量-T[O

]

≤8×10

-6

Φ130 mm材中A、B、C、D夹杂物≤1.0级

Ds夹杂0级

满足对产品冶金质量的要求。

Abstract

The flow sheet for production of bearing steel GCr15 at Special Steel Co

Masteel is 110 t UHP EBT EAF- 120 t LF-RH-Φ380 〜Φ600 mm round bloom CC process. By using the process measures including controlling EAF end [C

]

30. 10%

slagging down quantity W2. 0 kg/t steel

using ferro-aluminium to pre-deoxidize in tapping

LF end refining slag (/% ) : 50 ~60CaO

5 ~6MgO

8 ~15SiO

15 ~ 20Al

RH 67 Pa keeping ≥10 min and electromagnetic stirring with M-EMS

S-EMS and F-EMS

the total oxygen content in steel- T[O

]

is ≤8x10

-6

and in Φ130 mm round products the rating of A

C and D series inclusions is ≤1.0

and the rating of Ds series is 0

all meet the requirement on metallurgy quality of products.

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