Analysis on three typical abnormal microstructures of overhead power line suspension clamps

Weike Liu, Mengbao Zhou, Jiarui Hu, Songqi Wu, Xianhui Cao, Jie Xiong, Lian Hu, Yi Xie, Chao Feng, Jun Wang, Chun Liu, V. Yepes (+2 others)
2020 E3S Web of Conferences  
This article lists three typical abnormal microstructures of overhead power line suspension clamps, including inclusion, flake graphite and cementite network. A series of tests including macro check, hardness measurement, composition tests, Energy-dispersive x-ray analysis and metallographic observation have been carried out. The experimental results showed that the causes of abnormal microstructures mainly include: high content of impurities, flake graphite blank and unfulfilled annealing heat
more » ... lled annealing heat treatment. It is suggested to strengthen the supervision on suspension clamps before using, and focus on the quality inspection of metallographic structure and composition.
doi:10.1051/e3sconf/202016506029 fatcat:uqaz4yvmr5dpxpty2xixjzlhwi