Improvement of Carbon Segregation in Casting Bloom of Gear Steel

张广军; 彭继承; 张学诚; 战东平; 姜周华

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Improvement of Carbon Segregation in Casting Bloom of Gear Steel

更新时间：2026-01-21

- Improvement of Carbon Segregation in Casting Bloom of Gear Steel
- Special Steel Vol. 31, Issue 3, Pages: 30-32(2010)
- 作者机构：
  
  1. 兴澄特种钢铁有限公司一分厂，江阴,214429
  2. 东北大学材料与冶金学院,沈阳,110004
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：09 November 2009，
  
  Online First：07 November 2022，
  
  Published：07 November 2010
- 稿件说明：
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张广军, 彭继承, 张学诚, et al. Improvement of Carbon Segregation in Casting Bloom of Gear Steel[J]. Special Steel, 2010, 31(3): 30-32.
DOI：

张广军, 彭继承, 张学诚, et al. Improvement of Carbon Segregation in Casting Bloom of Gear Steel[J]. Special Steel, 2010, 31(3): 30-32. DOI：

摘要

试验研究了100 t UHP EAF-LF(VD)-连铸流程生产的0.20%～0.40%C、CrMo和CrMnTi系列齿轮钢300 mm×340 mm铸坯断面的碳偏析。在正常生产条件下

将浇铸钢水过热度控制在15～25℃、二冷比水量在0.35L/kg、结晶器和末端电磁搅拌扭矩分别在18、15 cN·cm对铸坯碳偏析改善有利。生产实践检验结果表明

连铸坯修正碳偏析极差降到了0.025%以下

齿轮钢轧材低倍偏析评级基本都达到了2.5级以下。

Abstract

The carbon segregation at cross section of 300 mm x 340 mm casting bloom of CrMo and CrMnTi series gear steel containing 0. 20% ~ 0. 04% C produced by 100 t UHP EAF-LF (VD) -concasting flow sheet has been tested and studied. At normal production conditions

to control the casting liquid overheating extent 15 ~ 25 ℃

the secondary cooling water rate 0. 35 L/kg

and the torque of mode and final electromagnetic stirring respectively 18 and 15 cN • cm is favorable to improve the bloom segregation. The verifying results in production practice show that the extreme different of corrected carbon content in bloom is less than 0. 025% and the rating of macro segregation of rolled products is less than 2. 5.

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