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Fracture analysis of oil field chain pin
Author(s): 
Pages: 236-239
Year: Issue:  S1
Journal: Heat Treatment of Metals

Keyword:  磨削烧伤 渗碳淬火 疲劳断裂 销轴;
Abstract: 采用金相检验、扫描电镜、应力分析等手段对断裂的20CrNi2Mo油田链条销轴进行了检测分析。结果表明,由于磨削工艺不当,销轴表面产生了淬火马氏体和回火屈氏体组织,渗层内形成沿晶裂纹,在弯扭载荷下以此为疲劳源,产生疲劳断裂。
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