| 齿轮轮辐开裂原因分析 |
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| 引用本文： | 朱晓红,薛佳元,诸亚红,顾震,陈海霞,朱芸怡.齿轮轮辐开裂原因分析[J].热处理,2020(3):46-48. |
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| 作者姓名： | 朱晓红 薛佳元 诸亚红 顾震 陈海霞 朱芸怡 |
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| 作者单位： | 无锡市产品质量监督检验院 |
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| 摘 要： | 45钢齿轮高频淬火后发现其轮辐开裂。为揭示齿轮开裂的原因,检测了开裂齿轮的化学成分、显微组织及硬度。结果表明:齿轮轮辐的壁厚尺寸有淬火开裂的危险,表面脱碳,且由于回火工艺不当,心部硬度远高于设计要求。齿轮轮辐高频淬火时开裂是由这些因素的综合作用所致。
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| 关 键 词： | 内应力 脱碳 回火 |
Analysis on Gear Spoke Cracking |
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| ZHU Xiaohong,XUE Jiayuan,ZHU Yahong,GU Zhen,CHEN Haixia,ZHU Yunyi.Analysis on Gear Spoke Cracking[J].Heat Treatment,2020(3):46-48. |
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| Authors: | ZHU Xiaohong XUE Jiayuan ZHU Yahong GU Zhen CHEN Haixia ZHU Yunyi |
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| Affiliation: | (Wuxi Institution of Supervision&Testing on Product Quality,Wuxi 214101,Jiangsu China) |
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| Abstract: | 45 steel gear was found cracked in its spoke after high-frequency hardening.The cracked gear was tested for chemical composition,microstructure and hardness to reveal the cause for its cracking.The results show that thickness of the gear spoke is a size in danger of cracking during quenching,the surface is decarburized,and the core hardness is much higher than the desired value due to the fault in tempering practice.The Gear spoke cracking during high-frequency hardening is caused by the combined action of the foregoing factors. |
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| Keywords: | internal stess decarburizing tempering |
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