Study of narrow hardenability bands of 20CrMnTiH

JI Chunsheng; WANG Zhongcheng; LIU Jianhui

doi:10.13374/j.issn1001-053x.2007.s1.025

Volume 29 Issue S1

Aug. 2021

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JI Chunsheng, WANG Zhongcheng, LIU Jianhui. Study of narrow hardenability bands of 20CrMnTiH[J]. Chinese Journal of Engineering, 2007, 29(S1): 85-88. doi: 10.13374/j.issn1001-053x.2007.s1.025

Citation:

JI Chunsheng, WANG Zhongcheng, LIU Jianhui. Study of narrow hardenability bands of 20CrMnTiH[J]. Chinese Journal of Engineering, 2007, 29(S1): 85-88. doi: 10.13374/j.issn1001-053x.2007.s1.025

JI Chunsheng, WANG Zhongcheng, LIU Jianhui. Study of narrow hardenability bands of 20CrMnTiH[J]. Chinese Journal of Engineering, 2007, 29(S1): 85-88. doi: 10.13374/j.issn1001-053x.2007.s1.025

Citation:

JI Chunsheng, WANG Zhongcheng, LIU Jianhui. Study of narrow hardenability bands of 20CrMnTiH[J]. Chinese Journal of Engineering, 2007, 29(S1): 85-88. doi: 10.13374/j.issn1001-053x.2007.s1.025

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Study of narrow hardenability bands of 20CrMnTiH

doi: 10.13374/j.issn1001-053x.2007.s1.025

1. Metallurgical and Ecological Engineering School, University of Science and Technology Beijing, Beijing 100083, China;
2. Laiwu Iron and Steel Co. Ltd., Laiwu 271104, China;
3. China International Engineering Consultation Co., Beijing 100044, China

Received Date: 2007-02-20
Rev Recd Date: 2007-04-11

Available Online: 2021-08-16

Abstract

Abstract

The component fluctuation of 20CrMnTiH steel in Laiwu Special Steel Plant was large,the-hardenability bands belt was HRC 8-10,this constrained the further improvement of gear steel quality.Based on the research,it was found that center segregation especially carbon segregation in blooms was the major prob-lem.By taking measures,especially the increase of electromagnetic stirring,the center carbon segregation was markedly improved;C control between 0.19%~0.22% reached 95.6%;hardenability bands belt control in HRC 6 reached 92.1% and in HRC 4 reached 86.2%.The quality of products is improved and the needs of users are met.
- 20CrMnTiH,
- bloom,
- internal quality,
- electromagnetic stirring