| Issue |
E3S Web Conf.
Volume 165, 2020
2020 2nd International Conference on Civil Architecture and Energy Science (CAES 2020)
|
|
|---|---|---|
| Article Number | 06029 | |
| Number of page(s) | 5 | |
| Section | Electrical and Power Engineering | |
| DOI | https://doi.org/10.1051/e3sconf/202016506029 | |
| Published online | 01 May 2020 | |
Analysis on three typical abnormal microstructures of overhead power line suspension clamps
1 State Grid Hunan Electric Power Company Limited Research Institute, Changsha 410007, China
2 Hunan Xiangdian Boiler Pressure Inspection Center Co., Ltd, Changsha 410007, China
3 State Grid Xupu Power Supply Company, Huaihua, Hunan, 419300, China
4 State Grid Changde Power Supply Company, Changde, Hunan, 415001, China
* Corresponding author: 543530832@qq.com
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 treatment. It is suggested to strengthen the supervision on suspension clamps before using, and focus on the quality inspection of metallographic structure and composition.
© The Authors, published by EDP Sciences, 2020
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