Study on Cracking Causes of One 500 kV SSY Type Equipment Clamp
One SSY type equipment clamp serviced in a 500 kV station was found to be cracked. In this paper, the crcaked cause and mechanism is investigated by means of macroscopic morphology observation, fracture surface morphology observation, X-ray digital detection, metallographic observation. The results...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2024-01-01
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| Series: | E3S Web of Conferences |
| Subjects: | |
| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2024/08/e3sconf_gesd2024_01001.pdf |
| _version_ | 1797343519286755328 |
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| author | Zheng Jianjun Wei Yong Liu Xiaokai Han Kuo |
| author_facet | Zheng Jianjun Wei Yong Liu Xiaokai Han Kuo |
| author_sort | Zheng Jianjun |
| collection | DOAJ |
| description | One SSY type equipment clamp serviced in a 500 kV station was found to be cracked. In this paper, the crcaked cause and mechanism is investigated by means of macroscopic morphology observation, fracture surface morphology observation, X-ray digital detection, metallographic observation. The results indicated that the main reason for the fracture of the equipment clamp this time is that the terminal board is a cast part, which contains a large number of casting defects such as porosity and shrinkage, resulting in a decrease in its effective cross-sectional area and load-bearing capacity. In addition, insufficient modification treatment of the terminal board led to insufficient toughness due to needle or rod-shaped eutectic silicon in the organization. Finally, under the combined action of dynamic load and self weight caused by the swinging of the wire in the wind, the terminal board was brittle fractured along the bolt hole with obvious stress concentration effect. |
| first_indexed | 2024-03-08T10:48:52Z |
| format | Article |
| id | doaj.art-fe5b0d9941e74b60ba447dc558c2805c |
| institution | Directory Open Access Journal |
| issn | 2267-1242 |
| language | English |
| last_indexed | 2024-03-08T10:48:52Z |
| publishDate | 2024-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj.art-fe5b0d9941e74b60ba447dc558c2805c2024-01-26T16:52:34ZengEDP SciencesE3S Web of Conferences2267-12422024-01-014780100110.1051/e3sconf/202447801001e3sconf_gesd2024_01001Study on Cracking Causes of One 500 kV SSY Type Equipment ClampZheng Jianjun0Wei Yong1Liu Xiaokai2Han Kuo3Inner Mongolia Power (Group) Co., Ltd., Inner Mongolia Power Research Institute BranchInner Mongolia Helin Power Generation CO.LTDInner Mongolia Power (Group) Co., Ltd., Inner Mongolia Power Research Institute BranchInner Mongolia Power (Group) Co., Ltd., Inner Mongolia Power Research Institute BranchOne SSY type equipment clamp serviced in a 500 kV station was found to be cracked. In this paper, the crcaked cause and mechanism is investigated by means of macroscopic morphology observation, fracture surface morphology observation, X-ray digital detection, metallographic observation. The results indicated that the main reason for the fracture of the equipment clamp this time is that the terminal board is a cast part, which contains a large number of casting defects such as porosity and shrinkage, resulting in a decrease in its effective cross-sectional area and load-bearing capacity. In addition, insufficient modification treatment of the terminal board led to insufficient toughness due to needle or rod-shaped eutectic silicon in the organization. Finally, under the combined action of dynamic load and self weight caused by the swinging of the wire in the wind, the terminal board was brittle fractured along the bolt hole with obvious stress concentration effect.https://www.e3s-conferences.org/articles/e3sconf/pdf/2024/08/e3sconf_gesd2024_01001.pdfalclampfracturecastingdefect |
| spellingShingle | Zheng Jianjun Wei Yong Liu Xiaokai Han Kuo Study on Cracking Causes of One 500 kV SSY Type Equipment Clamp E3S Web of Conferences al clamp fracture casting defect |
| title | Study on Cracking Causes of One 500 kV SSY Type Equipment Clamp |
| title_full | Study on Cracking Causes of One 500 kV SSY Type Equipment Clamp |
| title_fullStr | Study on Cracking Causes of One 500 kV SSY Type Equipment Clamp |
| title_full_unstemmed | Study on Cracking Causes of One 500 kV SSY Type Equipment Clamp |
| title_short | Study on Cracking Causes of One 500 kV SSY Type Equipment Clamp |
| title_sort | study on cracking causes of one 500 kv ssy type equipment clamp |
| topic | al clamp fracture casting defect |
| url | https://www.e3s-conferences.org/articles/e3sconf/pdf/2024/08/e3sconf_gesd2024_01001.pdf |
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