Development of High Quality Gear Steel 20MnCr5H-1 by 40 t EAF-LF-VD-3.7 t Ingot Casting Process

丁忠; 宋建萍; 林俊

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Development of High Quality Gear Steel 20MnCr5H-1 by 40 t EAF-LF-VD-3.7 t Ingot Casting Process

更新时间：2026-01-21

- Development of High Quality Gear Steel 20MnCr5H-1 by 40 t EAF-LF-VD-3.7 t Ingot Casting Process
- Special Steel Vol. 35, Issue 5, Pages: 50-51(2014)
- 作者机构：
  
  宝钢特钢有限公司制造管理部,上海,200940
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：10 April 2014，
  
  Online First：01 September 2022，
  
  Published：01 September 2014
- 稿件说明：
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丁忠, 宋建萍, 林俊. Development of High Quality Gear Steel 20MnCr5H-1 by 40 t EAF-LF-VD-3.7 t Ingot Casting Process[J]. Special Steel, 2014, 35(5): 50-51.
DOI：

丁忠, 宋建萍, 林俊. Development of High Quality Gear Steel 20MnCr5H-1 by 40 t EAF-LF-VD-3.7 t Ingot Casting Process[J]. Special Steel, 2014, 35(5): 50-51. DOI：

摘要

采用40 t电弧炉-LF-VD-3.7 t锭模铸-轧制工艺开发了20MnCr5H-1高品质齿轮钢(/%:0.17~0.22C，≤0.12Si，1.0~1.5Mn，≤0.035P，0.015~0.035S，0.8~1.3Cr，≤0.0020O，0.015~0.045A1)-Φ80 mm材。通过控制EAF终点[P]≤0.015%

LF精炼渣碱度≥2.5，并调整钢中元素含量，VD处理、喂硫线等工艺措施，试制的5炉20MnCr5H-1钢的成分为(/%):0.16~0.20C，0.05~0.12Si，1.20~1.30Mn，0.009~0.025P，0.020~0.035S，1.00~1.10Cr，0.0008~0.0015O，0.015~0.040Al，淬透性带宽△HRC为4，各项指标均满足要求。

Abstract

The Φ80 mm rolled product of high quality gear steel 20MnCr5H-l for car (/% ： 0.17-0.22C

≤ 0.12Si

1.0~1.5Mn

≤ 0.035P

0.015-0.035S

0.8-1.3Cr

≤ 0.0020O

0.015-0.045A1) has been developed by 40 t EAF- LF- VD- 3.7 t ingot casting-rolling process. With the process measures including controlling EAF end [P] W 0. 015%

LF refining slag basicity ≥ 2.5 and adjusting content of elements in steel

VD treating and feeding sulphur wire

the analysis of 5 heats steel 20MnCr5H-l is (/%：) 0.16-0.20C

0.05-0.12Si

1.20-1.30Mn

0.009-0. 025P

0.020-0.035S

1.00-1.10Cr

0.0008-0.0015O

0.015-0.040Al

hardenability band width △HRC 4

and each index all meets the requirement.

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