金属热处理 ›› 2022, Vol. 47 ›› Issue (7): 272-276.DOI: 10.13251/j.issn.0254-6051.2022.07.047

• 表面工程 • 上一篇    下一篇

隔膜压缩机膜片PIP处理改性研究

龙李威, 杜贵祥, 廖云庭, 金应荣, 罗德福   

  1. 西华大学 材料科学与工程学院, 四川 成都 610039
  • 收稿日期:2022-03-04 修回日期:2022-05-25 出版日期:2022-07-25 发布日期:2022-08-12
  • 通讯作者: 金应荣,教授,博士,E-mail:jinyr2048@163.com
  • 作者简介:龙李威(1998—),男,硕士研究生,主要研究方向为金属材料表面改性,E-mail:Lonlyve@163.com。
  • 基金资助:
    四川省重大科技专项(2020ZDZX0030;2022ZDYF3398)

PIP treatment modification of diaphragm compressor

Long Liwei1, Du Guixiang1, Liao Yunting1, Jin Yingrong1, Luo Defu1   

  1. School of Materials Science and Engineering, Xihua University, Chengdu Sichuan 610039, China
  • Received:2022-03-04 Revised:2022-05-25 Online:2022-07-25 Published:2022-08-12

摘要: 根据膜片表面出现拉应力引起疲劳开裂的具体情况,借助可控离子渗入(PIP)处理技术制备出了混合有氮过饱和固溶体的化合物渗层。结果表明,PIP处理在316L不锈钢膜片表面形成了硬度达1000 HV0.1以上,压应力大于280 MPa,应力层深度约16 μm的渗层,能够确保膜片工作过程中表面不再出现拉应力,从而延长膜片寿命至1000 h以上。

关键词: 隔膜压缩机, 金属膜片, 疲劳寿命, 可控离子渗入, 残余压应力

Abstract: With the programmable ion permeation(PIP) treatment technology and according to the specific situation of fatigue cracking caused by tensile stress on the diaphragm surface, a compound permeation layer with nitrogen supersaturated solid solution was prepared. The results show that a infiltrated layer with hardness of over 1000 HV0.1, compressive stress higher than 280 MPa and depth is about 16 μm on the surface of the 316L stainless steel diaphragm after PIP treatment. It ensures that no surface tensile stress present in the working process of the diaphragm, so that the working life of the diaphragm is prolonged.

Key words: diaphragm compressor, metal diaphragm, fatigue life, programmable ion permeation, residual compressive stress

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