摘要
通过对某电力线路失效的铝合金设备线夹进行宏观检查、断口分析、金相检验、化学成分分析、力学性能测试等,对其开裂原因和开裂机理进行了评估和分析.结果表明,铸造缺陷和焊接缺陷的共同作用引起的线夹强度下降是开裂的主要因素.
The cracking mechanism of the clamp was investigated by the visual inspection,fracture morphology observation, metallographic observation, chemical composition measurement, and mechan ical properties testing.The results showed that the decrease of the strength due to the casting defects and welding defects was the main factor of cracking.
作者
罗宏建
龚卓
王炯耿
李正刚
张国栋
LUO Hong-jian;GONG Zhuo;WANG Jiong-geng;LI Zheng-gang;ZHANG Guo-dong(Electric Power Research Institute,State Grid Zhe Jiang Co.,Ltd.,Hangzhou 310014,China;School of Power and Mechanical Engineering,Wuhan University,Wuhan 430072,China)
出处
《云南师范大学学报（自然科学版）》
2018年第5期44-48,共5页
Journal of Yunnan Normal University:Natural Sciences Edition
基金
国网浙江省电力有限公司科技基金资助项目(5211DS16002L)
关键词
设备线夹
缺陷
强度
失效
Terminal connector
Defect
Strength
Failure
