【摘要】 对井下φ22×86规格的矿用圆环链的大量断裂进行了宏观统计分析。微观断裂机制分析、材料状态检验,并找出了断裂原因。通过进一步对疲劳裂纹萌生和腐蚀疲劳裂纹扩展试验,提出了圆环链生产的合理工艺参数,为稳定圆环链的生产质量提供了依据,大大延长了圆环链的使用寿命。更多还原

【Abstract】 The macroscopic statistics analysis, microfracture mechanis, analysis, ma-terial condition test are conducted for a large number of fractures of toroidchains used in coal mines, and the fracture cause is found out. By means offatigue crack initiation and corrosion fatigue crack propagation tests, the suit-able production process parameter for toroid chain is furnished, and scientificbasis is provided for stabilizing product quality and increasing service life ofthe toroid chains.更多还原