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1994年，某煤矿在不到半年的时间内连续发生上两起矿井提升尾绳连杆断裂的恶性事故，直接经济损失在百万元以上。受煤矿和生产连杆厂家的委托，我们对其进行了失效分析。一、检查结果1．宏观检查断口严重锈蚀，经1：2盐酸水溶液清洗，周边断回露出银灰色金属光泽，凸凹不平。而
In 1994, in a coal mine in less than six months in a row on the two mine hoist rope connecting rod fracture of the vicious accident, the direct economic loss of more than one million yuan. Commissioned by coal mines and production linkage manufacturers, we conducted a failure analysis of them. First, check the results 1. Macroscopic examination of the fracture serious corrosion, washed with hydrochloric acid solution 1: 2, surrounded by silver gray metallic luster, uneven. and