PIP treatment modification of diaphragm compressor

doi:10.13251/j.issn.0254-6051.2022.07.047

Abstract

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

CLC Number:

TG156.8⁺2

Long Liwei, Du Guixiang, Liao Yunting, Jin Yingrong, Luo Defu. PIP treatment modification of diaphragm compressor[J]. Heat Treatment of Metals, 2022, 47(7): 272-276.

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