金属热处理 ›› 2020, Vol. 45 ›› Issue (5): 119-122.DOI: 10.13251/j.issn.0254-6051.2020.05.022

• 工艺研究 • 上一篇    下一篇

脉冲电流处理与回火对碳钢零件残余应力的调控

潘龙1, 楚斌2, 王保升1, 徐振钦1   

  1. 1. 南京工程学院 智能装备产业技术研究院, 江苏 南京 211167;
    2. 南京康尼机电股份有限公司, 江苏 南京 210013
  • 收稿日期:2019-10-06 出版日期:2020-05-25 发布日期:2020-09-02
  • 作者简介:潘 龙(1988—),男,讲师,博士,主要研究方向为残余应力测试和调控技术,E-mail: panlong0229@126.com
  • 基金资助:
    江苏省高等学校自然科学研究面上项目(18KJB460015);南京工程学院引进人才科研启动基金(YKJ201742);江苏省产学研合作项目(BY2018311)

Regulation of residual stress of carbon steel parts by electropulsing treatment and tempering

Pan Long1, Chu Bin2, Wang Baosheng1, Xu Zhenqin1   

  1. 1. Industrial Technology Research Institute of Intelligent Equipment, Nanjing Institute of Technology, Nanjing Jiangsu 211167, China;
    2. Nanjing Kangni Mechanical & Electrical Co., Ltd., Nanjing Jiangsu 210013, China
  • Received:2019-10-06 Online:2020-05-25 Published:2020-09-02

摘要: 为了优化残余应力调控工艺,研究了脉冲电流处理与回火处理对45碳钢零件淬火残余应力的影响,产生脉冲电流的电压为2120 V,电容为400 μF。结果表明:脉冲电流处理、600 ℃回火、200 ℃回火对淬火残余应力的降低率分别为50%、80%、40%左右,有效时间分别为30、20、120 min;脉冲电流处理和200 ℃回火后零件保持较高硬度,约为51 HRC,显微组织保留原始淬火马氏体组织形貌;600 ℃回火后零件硬度降低到23 HRC,显微组织发生了较大变化。

关键词: 残余应力, 脉冲电流处理, 回火处理, 钻孔应变法, 马氏体

Abstract: To optimize the residual stress controlled process, the effects of electropulsing treatment and tempering on quenched residual stress of the 45 carbon steel were studied. The voltage to generate electro pulse was 2120 V, and the capacitance was 400 μF. The results show that the release rates of quenched residual stress by electropulsing treatment, 600 ℃ tempering and 200 ℃ tempering are about 50%, 80% and 40% respectively, and the effective time is 30, 20 and 120 min respectively. Furthermore, the parts after electropulsing treatment and 200 ℃ tempering have high hardness about 51 HRC and the quenched martensite microstructure is remained, but the parts after 600 ℃ tempering have low hardness, 23 HRC and the microstructure changes greatly.

Key words: residual stress, electropulsing treatment, tempering, hole-drilling strain-gauge method, martensite

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