| 一级行星架内孔淬火开裂原因分析 |
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| 引用本文： | 燕友增,张皓,曹奇,孟高强,夏国锋,徐泷.一级行星架内孔淬火开裂原因分析[J].金属热处理,2021,46(4):236-238. |
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| 作者姓名： | 燕友增 张皓 曹奇 孟高强 夏国锋 徐泷 |
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| 作者单位： | 明阳智慧能源集团股份公司, 广东 中山 528400 |
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| 摘 要： | 一批风电齿轮箱中42CrMo4钢一级行星架调质后机加工过程中发现内孔开裂。从成分偏析分析、淬火工艺验证、机加工表面磁粉探伤检测、金相分析等方面,对一级行星架进行了分析。结果表明,淬火冷却过于激烈是导致开裂的直接原因,严重的成分偏析是导致淬火开裂的主要原因。
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| 关 键 词： | 风电齿轮箱 一级行星架 调质处理 内孔开裂 成分偏析 |
| 收稿时间： | 2020-10-13 |
Causes analysis of quenching cracking of inner hole of first class planet carrier |
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| Yan Youzeng,Zhang Hao,Cao Qi,Meng Gaoqiang,Xia Guofeng,Xu Shuang.Causes analysis of quenching cracking of inner hole of first class planet carrier[J].Heat Treatment of Metals,2021,46(4):236-238. |
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| Authors: | Yan Youzeng Zhang Hao Cao Qi Meng Gaoqiang Xia Guofeng Xu Shuang |
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| Affiliation: | Ming Yang Smart Energy Group Co., Ltd., Zhongshan Guangdong 528400, China |
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| Abstract: | The inner holes of 42CrMo4 steel planet carrier were found cracking during machining after quenching and tempering in a batch of wind turbine gearboxes. Composition segregation, microstructure, quenching process, and magnetic particle test of machined surface of the planet carriers were analyzed. The results show that too intensive quenching cooling is the direct cause of cracking, and serious segregation is the main cause of quenching cracking. |
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| Keywords: | wind electricity gear box first class planet carrier quenching and tempering inner hole cracking composition segregation |
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