Effect of Soft Reduction and Cast Speed on Macrostructure and Centre C Segregation of 42CrMo Steel Φ195 mm Bar Rolled from 410 mm x 530 mm Cast Bloom

张越; 吕泽安; 马建祎; 钟骞; 王占忠; 彭峰

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Effect of Soft Reduction and Cast Speed on Macrostructure and Centre C Segregation of 42CrMo Steel Φ195 mm Bar Rolled from 410 mm x 530 mm Cast Bloom

更新时间：2026-01-21

- Effect of Soft Reduction and Cast Speed on Macrostructure and Centre C Segregation of 42CrMo Steel Φ195 mm Bar Rolled from 410 mm x 530 mm Cast Bloom
- Special Steel Vol. 42, Issue 4, Pages: 35-38(2021)
- 作者机构：
  
  1. 大冶特殊钢有限公司棒材研究所,黄石,435001
  2. 大冶特殊钢有限公司高品质特殊钢湖北省重点实验室,黄石,435001
  3. 黄冈师范学院机电与汽车工程学院,黄冈,438001
  4. 大冶特殊钢有限公司转炉厂,黄石,435001
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：17 December 2020，
  
  Online First：09 March 2022，
  
  Published：09 March 2021
- 稿件说明：
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张越, 吕泽安, 马建祎, et al. Effect of Soft Reduction and Cast Speed on Macrostructure and Centre C Segregation of 42CrMo Steel Φ195 mm Bar Rolled from 410 mm x 530 mm Cast Bloom[J]. Special Steel, 2021, 42(4): 35-38.
DOI：

张越, 吕泽安, 马建祎, et al. Effect of Soft Reduction and Cast Speed on Macrostructure and Centre C Segregation of 42CrMo Steel Φ195 mm Bar Rolled from 410 mm x 530 mm Cast Bloom[J]. Special Steel, 2021, 42(4): 35-38. DOI：

摘要

对比试验了铸坯的轻压下量(0～8 mm)及拉速(0.42～0.49 m/min)对42CrMo钢Φ195 mm轧材低倍组织和偏析的影响。结果表明

在现有工艺条件下

42CrMo钢过热度控制在20～30 ℃

二冷比水量0.30 L/kg

结晶器电搅100A/1.5 Hz

末端电搅400A/8 Hz

连铸拉速控制在0.49 m/min

总压下量6～8 mm

能有效改善42CrMo钢轧材的内部质量。

Abstract

The effects of soft reduction (0 ~ 8 mm) and casting speed (0.42 ~ 0.49 m/min) of cast bloom on macrostructure and segregation of 42CrMo steel Φ195 mm rolled product are tested. The results show at present process condition that when the superheat degree of 42CrMo steel is controlled at 20 ~ 30℃ with secondary cooling specific water content 0.3 L/kg

mold and end electromagnetic stirring 100 A/l.5 Hz and 400 A/8 Hz

the casting speed 0. 49 m/min and the total soft reduction 6 ~ 8 mm

the internal quality of 42CrMo steel rolled product can be efiectively improved.

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