Development of Process for Φ55～70 mm Bar of GCr15 Bearing Steel Produced by 220 mm×220 mm Continuous Billet

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Development of Process for Φ55～70 mm Bar of GCr15 Bearing Steel Produced by 220 mm×220 mm Continuous Billet

更新时间：2026-01-21

- Development of Process for Φ55～70 mm Bar of GCr15 Bearing Steel Produced by 220 mm×220 mm Continuous Billet
- Special Steel Vol. 28, Issue 5, Pages: 60-61(2007)
- 作者机构：
  
  上海交通大学材料科学与工程学院,上海,200030
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：10 May 2007，
  
  Online First：15 February 2023，
  
  Published：15 February 2007
- 稿件说明：
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池武. Development of Process for Φ55～70 mm Bar of GCr15 Bearing Steel Produced by 220 mm×220 mm Continuous Billet[J]. Special Steel, 2007, 28(5): 60-61.
DOI：

池武. Development of Process for Φ55～70 mm Bar of GCr15 Bearing Steel Produced by 220 mm×220 mm Continuous Billet[J]. Special Steel, 2007, 28(5): 60-61. DOI：

摘要

开发了100 t DC EAF+LF+VD-220 mm×220 mm坯连铸-横列式轧机轧制工艺生产φ55～70 mm GCr15轴承钢材。工艺试验结果表明

当连铸时钢水过热度≤35℃

轧制压缩比为12.58～20.38时

220 mm×220 mm连铸坯的加热时间≥8 h

轧制的GCr15轴承钢φ55～70 mm成品轧材中心疏松≤1.5级

带状组织≤1.5级

可以满足GB/T18254-2002标准要求。

Abstract

The process of 100t DCEAF+LF+VD-220 mm×220 mm continuous billet -rolling mill to rollφ 55～70 mm GCr15 bearing steel bar has been developed. Process test results showed that with overheating temperature of molten steel during continuous casting ≤35 ℃

heating time of 220 mm×220 mm billet ≥8 h

rolling reduction 12.58~ 20.38

the central porosity rating of φ55～70 mm finished rolled products of CCr15 bearing steel was ≤1.5

the banded structure rating≤1.5 to meet the requirement of standard GB/T18254-2002.

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