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| Analysis of Corrosion of Bolts in Wind Power Tower Tube |
| Received:April 28, 2021 Revised:June 25, 2021 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2021.12.013 |
| KeyWord:wind power tower barrel corrosion bolt electrochemical corrosion crevice corrosion |
| Author | Institution |
| LI Yan |
Shenzhen Guoneng Chentai Technology Co., Ltd., Shenzhen , China |
| FANG Hai-feng |
China Guangdong Nuclear Power Sheyang Wind Power Co., Ltd., Yancheng , China |
| SUN Zuo-feng |
China Guangdong Nuclear Power Sheyang Wind Power Co., Ltd., Yancheng , China |
| HE Zi-yang |
Shenzhen Guoneng Chentai Technology Co., Ltd., Shenzhen , China |
| CHEN You-wei |
Shenzhen Guoneng Chentai Technology Co., Ltd., Shenzhen , China |
| WANG Yu-fei |
Shenzhen Guoneng Chentai Technology Co., Ltd., Shenzhen , China |
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| Abstract: |
| In view of the corrosion status of bolts in wind power towers, chemical composition analysis, metallographic analysis, impact property test, tensile property test, hardness test and other methods were used to analyze the bolts. The results show that the composition of bolts, nuts, washers before and after use meets the standard. The impact, tensile, and hardness performance tests on the bolts before and after use all meet the safety requirements. The metallography of the bolts before and after use is 1~4, in line with national standards, and the grain size test shows that it is 7.5~8.0 before use and is 8 after use. Therefore, it is concluded that the bolts in service meet the requirements for safe use; under the combined action of the harsh natural environment, the bolts have undergone electrochemical corrosion and crevice corrosion. Finally, suggestions are made for the use and maintenance of bolts. |
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