Exploration of the Heat Treatment Process of Wind Turbine Main Shafts Based on Computer Simulation Technology

Authors

    Xin Xie, Feng Gu, Yuan You, Yifan Wang, Wenping Sheng, Yan Wang, Jie Wu Network Information Center, Qiqihar University, Qiqihar 161006, Heilongjiang Province, China School of Materials Science and Engineering, Key Laboratory of Polymer Matrix Composites in Heilongjiang Province, Qiqihar University, Qiqihar 161006, Heilongjiang Province, China School of Materials Science and Engineering, Key Laboratory of Polymer Matrix Composites in Heilongjiang Province, Qiqihar University, Qiqihar 161006, Heilongjiang Province, China School of Materials Science and Engineering, Key Laboratory of Polymer Matrix Composites in Heilongjiang Province, Qiqihar University, Qiqihar 161006, Heilongjiang Province, China School of Materials Science and Engineering, Key Laboratory of Polymer Matrix Composites in Heilongjiang Province, Qiqihar University, Qiqihar 161006, Heilongjiang Province, China School of Materials Science and Engineering, Key Laboratory of Polymer Matrix Composites in Heilongjiang Province, Qiqihar University, Qiqihar 161006, Heilongjiang Province, China School of Materials Science and Engineering, Key Laboratory of Polymer Matrix Composites in Heilongjiang Province, Qiqihar University, Qiqihar 161006, Heilongjiang Province, China

Keywords:

Computer simulation, Main shaft, Heat treatment, Finite element

Abstract

Based on computer simulation technology, the finite element simulation of the heat treatment process for 42CrMo4 alloy steel wind turbine main shafts was conducted. Changes in the temperature field, stress field, phase field, and hardness field during the heat treatment process were analyzed. Simulation results indicated that the water quenching process generated significant stress, with a maximum stress of 354 MPa. However, tempering could reduce the stress caused by water quenching, with the corresponding maximum stress decreasing to 119 MPa. After water quenching, the main shaft obtained a martensite volume fraction of approximately 10%, achieving a maximum hardness of 50.9 HRC. The increase in hardness was directly proportional to the martensite content. Following high-temperature tempering, martensite could be transformed into tempered sorbite, resulting in a hardness reduction to 30 HRC. The final microstructure of the main shaft after heat treatment consisted of pearlite, bainite, tempered sorbite, and ferrite, with a hardness range of 26.8 to 30 HRC. This demonstrates that computer simulation technology can predict the heat treatment results of large forgings, providing a theoretical basis for developing heat treatment processes.

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Published

2023-12-22