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1999年1月—10月,月山车辆段段修车间共检修摇枕5386个,发现裂纹摇枕1406个,发现故障2044件(裂纹1908件)。其中,摇枕八字面裂纹故障占全部故障的89.28%,而摇枕其他部位故障较少。1 原因分析(1)结构原因。摇枕八字面内侧上部弯角处是摇枕铸造缺陷集中的部位之一,沙眼和铸造缩孔
From January to October 1999, a total of 5386 bolsters were repaired in the section repair workshop of Yushan Vehicle Depot, and 1406 crack bolsters were found, finding 2044 faults (1908 cracks). Among them, brim octagonal cracks accounted for 89.28% of all failures, while the other parts of the bolster fault less. 1 Analysis (1) the cause of the structure. Brazzavista literally at the upper corner of the corner is a casting billet defects concentrated one of the parts, trachoma and casting shrinkage