Practice of Continuous Rolling Process to Improve Macrostructure of Small Size Bar Products of Bearing Steel GCrl5

付俊薇; 赵杰; 刘建培; 周建英

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Practice of Continuous Rolling Process to Improve Macrostructure of Small Size Bar Products of Bearing Steel GCrl5

更新时间：2026-01-21

- Practice of Continuous Rolling Process to Improve Macrostructure of Small Size Bar Products of Bearing Steel GCrl5
- Special Steel Vol. 31, Issue 5, Pages: 42-44(2010)
- 作者机构：
  
  1. 河北工业职业技术学院,石家庄,050091
  2. 河北钢铁集团石家庄钢铁有限责任公司,石家庄,050031
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：15 April 2010，
  
  Online First：11 November 2022，
  
  Published：11 November 2010
- 稿件说明：
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付俊薇, 赵杰, 刘建培, et al. Practice of Continuous Rolling Process to Improve Macrostructure of Small Size Bar Products of Bearing Steel GCrl5[J]. Special Steel, 2010, 31(5): 42-44.
DOI：

付俊薇, 赵杰, 刘建培, et al. Practice of Continuous Rolling Process to Improve Macrostructure of Small Size Bar Products of Bearing Steel GCrl5[J]. Special Steel, 2010, 31(5): 42-44. DOI：

摘要

通过降低轧制速度

增加粗轧道次压下量特别是后几道次的压下量

使GCr15轴承钢150 mm×150mm铸坯连轧成Φ30～45 mm材的低倍质量明显提高

缩孔出现率由改善轧制工艺前的26%～46%降至0

超声波探伤合格率100%

一般疏松级别0～1

中心疏松级别1～1.5。

Abstract

With decreasing rolling speed

increasing reduction in rough rolling passes especially in last passes

the quality of macrostructure of continuous rolling Φ30 ~45 mm round products of bearing steel GCr15 rolled from 150 mm x 150 mm casting billet increases obviously i. e. occurred ratio of residual shrinkage hole decreases to 0 from 26%〜46% before improvement of rolling process

qualified ratio of ultrasonic detection is 100%

rating of general porosity is 0 ~1 and rating of center porosity is 1-1.5.

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