热处理对35CrMo钢磁性能的影响

doi:10.13251/j.issn.0254-6051.2022.05.038

金属热处理 ›› 2022, Vol. 47 ›› Issue (5): 221-225.DOI: 10.13251/j.issn.0254-6051.2022.05.038

热处理对35CrMo钢磁性能的影响

沈正祥¹, 吴彩保¹, 李靖琳¹, 翟彬彬², 蔡鹏辉¹, 黄焕东¹, 陈虎¹, 谭继东³

1.宁波市特种设备检验研究院, 浙江宁波 315048;
2.浙江工业大学机械工程学院, 浙江杭州 310014;
3.中国特种设备检测研究院, 北京 100029

收稿日期:2021-09-28 修回日期:2022-01-18 出版日期:2022-05-25 发布日期:2022-06-16
作者简介:沈正祥(1984—),男,副研究员,博士,主要研究方向为特种设备安全技术,E-mail: shenzx84@163.com
基金资助:
浙江省基础公益研究计划(LGF21E040003);浙江省市场监督管理局科研计划(20190330);宁波市质量技术监督局科技项目(2019)

Effect of heat treatment on magnetic properties of 35CrMo steel

Shen Zhengxiang¹, Wu Caibao¹, Li Jinglin¹, Zhai Binbin², Cai Penghui¹, Huang Huandong¹, Chen Hu¹, Tan Jidong³

1. Ningbo Special Equipment Inspection & Research Institute, Ningbo Zhejiang 315048, China;
2. College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou Zhejiang 310014, China;
3. China Special Equipment Inspection and Research Institute, Beijing 100029, China

Received:2021-09-28 Revised:2022-01-18 Online:2022-05-25 Published:2022-06-16

摘要/Abstract

摘要： 基于磁矫顽力和磁巴克豪森噪声(MBN)两种无损检测方法,研究不同热处理状态下35CrMo钢磁性能的变化规律,并以硬度测试作为对比验证。结果表明,相比于原始状态,淬火使35CrMo钢晶粒细化,矫顽力由10.42 A/cm提高至19.85 A/cm,增幅约90.40%,MBN应力集中明显;回火后,组织均匀,MBN应力水平整体下降,矫顽力降为12.50 A/cm,但最终的增加幅度仍有19.96%,与表面硬度变化基本一致,表明通过材料磁特性测量可有效表征不同热处理状态下的微观组织与力学性能,为产品质量在线检测提供技术参考。

关键词: 35CrMo钢, 矫顽力, 磁巴克豪森噪声法, 硬度, 应力

Abstract: Based on magnetic coercive force and magnetic Barkhausen noise (MBN) nondestructive testing methods, the magnetic properties of 35CrMo steel under different heat treatment states were studied, and the surface hardness test was used as a comparative verification. The results show that compared with the original state, the grain of 35CrMo steel after quenching is refined, the coercive force increases from 10.42 A/cm to 19.85 A/cm with an increment about 90.40%, and the MBN-stress concentration is obvious. After tempering, the microstructure becomes uniform, the MBN-stress level is reduced as a whole, and the coercive force decreases to 12.50 A/cm, but the final increment is 19.96%, which is consistent with the surface hardness. The measurement of magnetic property can effectively characterize the microstructure and mechanical properties of the steel under different heat treatment conditions, and provide technical reference for online product quality test.

Key words: 35CrMo steel, coercive force, magnetic Barkhausen noise method, hardness, stress

中图分类号:

TG115

沈正祥, 吴彩保, 李靖琳, 翟彬彬, 蔡鹏辉, 黄焕东, 陈虎, 谭继东. 热处理对35CrMo钢磁性能的影响[J]. 金属热处理, 2022, 47(5): 221-225.

Shen Zhengxiang, Wu Caibao, Li Jinglin, Zhai Binbin, Cai Penghui, Huang Huandong, Chen Hu, Tan Jidong. Effect of heat treatment on magnetic properties of 35CrMo steel[J]. Heat Treatment of Metals, 2022, 47(5): 221-225.

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热处理对35CrMo钢磁性能的影响

Effect of heat treatment on magnetic properties of 35CrMo steel

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