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关于前轴颈螺母咬死故障分析

Analysis on the Locking Fault of the Front Journal Nut
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摘要 某型发动机多次出现前轴颈螺母分析不下来,采用切削方法破坏螺母进行分解后,发现压气机前轴颈和螺母螺纹有较长的损伤,甚至局部断扣,螺纹上出现金属瘤。通过对螺纹咬死的问题进行原因分析,然后对螺纹咬死的原因进行一一排除,最后找到拧紧力矩过大导致前轴颈螺纹咬死。 The front journal nut can not be disassembled for many times in an engine. After breaking the nut by cutting, the nut can be decomposed. The thread of the front axle neck and nut of the current compressor has long damage, even partial broken, and metal lumps appear on the thread. This paper analyzes the causes of screw-biting and finds out that the excessive tightening moment leads to the die-biting of the front journal thread by means of the method of eliminating old faules.
作者 李雨玲 邓波 蓝宝 Li Yuling;Deng Bo;Lan Bao(AECC South Industry Co.,Ltd.,Zhuzhou Hunan 412000)
出处 《现代工业经济和信息化》 2020年第1期122-123,共2页 Modern Industrial Economy and Informationization
关键词 螺母 前轴颈 螺纹 nut front of bolster bearing screw thread
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