Analysis on quenching cracking of a heavy forging of wind turbine system

doi:10.13251/j.issn.0254-6051.2023.03.050

Heat Treatment of Metals ›› 2023, Vol. 48 ›› Issue (3): 296-300.DOI: 10.13251/j.issn.0254-6051.2023.03.050

• TEST AND ANALYSIS • Previous Articles

Analysis on quenching cracking of a heavy forging of wind turbine system

Li Xinsheng¹, Liu Yongchao¹, Liu Long², Xu Jian¹, Bi Jinghua¹, Liu Guoqiang³, Yan Huaiying³, Ding Ning²

1. Jinlei Technology Co., Ltd., Jinan Shandong 271105, China;
2. Research Center of Failure Analysis and Engineering Safety Assessment, Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Sciences), Jinan Shandong 250014, China;
3. Shandong Institute of Mechanical Design and Research, Qilu University of Technology (Shandong Academy of Sciences), Jinan Shandong 250031, China

Received:2022-10-09 Revised:2022-12-27 Online:2023-03-25 Published:2023-04-25

Abstract

Abstract: Cause of quenching cracks in a heavy forging of wind turbine system was analyzed by means of scanning electron microscope and energy dispersive X-ray spectrum. The results show that the initial position of the quenching crack is located at the protuberance position on inner wall of central hole of the heavy forging. The quenching crack is caused by the combined action of the additional stress at the protuberance on inner wall and the internal stress generated in the segregation region during heat treatment.

Key words: wind turbine system, heavy forging, heat treatment, quenching cracking, segregation

CLC Number:

TG162.71

Li Xinsheng, Liu Yongchao, Liu Long, Xu Jian, Bi Jinghua, Liu Guoqiang, Yan Huaiying, Ding Ning. Analysis on quenching cracking of a heavy forging of wind turbine system[J]. Heat Treatment of Metals, 2023, 48(3): 296-300.

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Analysis on quenching cracking of a heavy forging of wind turbine system

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