ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2014, Vol. 35 ›› Issue (5): 50-51.

• 组织和性能 • 上一篇    下一篇

40 t EAF-LF-VD-3.7 t铸锭工艺高品质齿轮钢20MnCr5H-1的研制

丁忠,宋建萍,林俊   

  1. 宝钢特钢有限公司制造管理部,上海 200940
  • 收稿日期:2014-04-10 出版日期:2014-10-01 发布日期:2022-09-01
  • 作者简介:丁 忠(1983-),男,硕士(北京科技大学),工程师,特殊钢品种开发。

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

Ding Zhong , Song Jianping , Lin Jun   

  1. Manufacturing Manage Division, Baosteel Special Steel Co Ltd, Shanghai 200940
  • Received:2014-04-10 Published:2014-10-01 Online:2022-09-01

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。

关键词: 20MnCr5H-1齿轮钢, 40 t EAF-LF-VD-3.7 t铸锭工艺, 淬透性带, 氧含量

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.

Key words: Gear Steel 20MnCr5H-1, 40 t-EAF-LF-VD-3.7 t Ingot Casting Process, Hardenability Band, Oxygen Content