| 012Al钢齿轮精锻模失效分析 |
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| 引用本文： | 李振,欧耀辉,秦建军,胡树兵,赵红军,赵军华.012Al钢齿轮精锻模失效分析[J].热处理,2012(3):79-83. |
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| 作者姓名： | 李振 欧耀辉 秦建军 胡树兵 赵红军 赵军华 |
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| 作者单位： | 华中科技大学材料成形与模具技术国家重点实验室;三一重工集团;江苏太平洋精锻科技有限公司 |
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| 摘 要： | 012Al钢制齿轮精锻模在使用中早期失效。采用宏观检验、金相检验和硬度测试等方法分析了模具的失效原因。结果表明，模具的早期失效主要是由于离子渗氮层较浅，脆性较大，以及存在脉状氮化物等缺陷所致。针对上述原因，提出了相应的改进措施。
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| 关 键 词： | 精锻模 渗氮层 热疲劳 失效 |
Failure Analysis on 012AI Steel Finish Forging Die for Gear |
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| LI Zhen,OU Yao-hui,QIN Jian-jun,HU Shu-bing,ZHAO Hong-jun,ZHAO Jun-hua.Failure Analysis on 012AI Steel Finish Forging Die for Gear[J].Heat Treatment,2012(3):79-83. |
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| Authors: | LI Zhen OU Yao-hui QIN Jian-jun HU Shu-bing ZHAO Hong-jun ZHAO Jun-hua |
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| Affiliation: | 1 (1.State Key Laboratory of Material Processing and Die and Mould Technology,Huazhong University of Science and Technology,Wuhan 430074,Huhei China;2.Sany Group Corporate,Changsha 410100, Hunan China;3.Pacific Precision Forging Company,Jiangyan 225500,Jiangsu China) |
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| Abstract: | The finish forging die for gear,made of 012AI steel,failed early in service.Macroscopic and metallographic examinations and hardness test were performed to reveal the causes of die failure.The results show that premature failure of the die arises mainly from more shallow and britller ion-nitrided case and such delects as vein nitride and so on present in the case.The corresponding measures to improve on the die quality were put forward. |
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| Keywords: | finish forging die nitrided layer thermal fatigue failure |
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