Effect of Heating Time of Bearing Steel GCrlS 300 mm x 400 mm Casting Bloom at 1180 ~ 1260 ℃ on Banded Structure of Φ 60 mm Bar

余雷; 田浩; 李博鹏

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Effect of Heating Time of Bearing Steel GCrlS 300 mm x 400 mm Casting Bloom at 1180 ~ 1260 ℃ on Banded Structure of Φ 60 mm Bar

更新时间：2026-01-21

- Effect of Heating Time of Bearing Steel GCrlS 300 mm x 400 mm Casting Bloom at 1180 ~ 1260 ℃ on Banded Structure of Φ 60 mm Bar
- Special Steel Vol. 39, Issue 3, Pages: 51-53(2018)
- 作者机构：
  
  1. 大冶特殊钢股份有限公司棒材研究所
  2. 高品质特殊钢湖北省重点实验室,黄石,435001
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：28 December 2017，
  
  Online First：02 June 2022，
  
  Published：02 June 2018
- 稿件说明：
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余雷, 田浩, 李博鹏. Effect of Heating Time of Bearing Steel GCrlS 300 mm x 400 mm Casting Bloom at 1180 ~ 1260 ℃ on Banded Structure of Φ 60 mm Bar[J]. Special Steel, 2018, 39(3): 51-53.
DOI：

余雷, 田浩, 李博鹏. Effect of Heating Time of Bearing Steel GCrlS 300 mm x 400 mm Casting Bloom at 1180 ~ 1260 ℃ on Banded Structure of Φ 60 mm Bar[J]. Special Steel, 2018, 39(3): 51-53. DOI：

摘要

GCr15轴承钢(/%:0.95～1.05C

0.20～0.30Si

0.30～0.40Mn

1.40～1.50Cr)300 mm×400 mm连铸坯的生产流程为120 t BOF-LF-RH-CC-连轧至Φ60 mm材。生产试验了连铸坯1 180～1 260℃高温扩散时间4.5～24 h对Φ60 mm热轧材碳化物带状的影响。结果表明

随保温时间的增加

热轧材带状级别降低

当保温时间为4.5～6.5 h、6.5～10 h和≥13 h时

Φ60 mm材的带状级别分别达2.5级、2.0级和1.5级。可根据不同带状级别要求

设定相应的保温时间。

Abstract

The production flowsheet of 300 mm x400 mm casting bloom of bearing steel GCrl5(/% ： 0.95 ~ 1.05C

0.20 ~0. 30Si

0. 30 ~0.40Mn

1.40 ~ 1.50Cr) is 120 t BOF-LF-RH-CC-continuous rolling to Φ60 mm products. The effect of high-temperature diffusion time 4. 5 ~ 24 h of casting bloom at 1180 ~ 1260°C on carbide banded structure of Φ60 mm hot-rolled products has been tested. Results show that with increasing holding time the rating of banded structure of hot-rolled products decreases

and with holding time 4.5 ~6.5 h

6.5 ~ 10 h and ≥13 h the rating of banded structure of Φ60 mm products is respectively 2.5

2. 0 and 1. 5. It is available based on the requirement on different rating of banded structure to define the corresponding holding time.

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