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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。
The macroscopic statistical analysis was carried out on a large number of fractures of mine circular chain with φ22 × 86 specifications. Micro-fracture mechanism analysis, material state test, and find out the reason of fracture. Through further testing of fatigue crack initiation and corrosion fatigue crack growth, the reasonable process parameters of circular chain production were proposed, which provided the basis for stabilizing the production quality of circular chain and greatly prolong the service life of circular chain.