| 高钨镦块材料的组织与性能 |
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| 引用本文： | 梁容海,汤金芝.高钨镦块材料的组织与性能[J].中国有色金属学报,1999,9(2):263-267. |
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| 作者姓名： | 梁容海 汤金芝 |
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| 作者单位： | 中南工业大学粉末冶金国家重点实验室 |
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| 摘 要： | 电镦发动机气门用镦块材料要求具有高的高温硬度，同时保持一定的韧性和可加工性。所研制的Ｗ２５２，Ｗ２３２高钨合金镦块在８００℃时，ＨＶ值分别为１５０和１６９，其使用寿命比ＣｕＷ８０镦块提高２０倍以上。用于生产排气门时，其成品率由５７．８％提高到９８．２％以上。
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| 关 键 词： | 气门 高温硬度 高钨镦块 电热镦粗 |
HIGH TUNGSTEN ELECTRICAL UPSETTING DIE BLOCKS MATERIAL |
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| Liang Ronghai,Tang Jinzhi and Liu Hongwei State Key Laboratory for Powder Metallurgy,Central South University of Technology,Changsha ,P. R. China.HIGH TUNGSTEN ELECTRICAL UPSETTING DIE BLOCKS MATERIAL[J].The Chinese Journal of Nonferrous Metals,1999,9(2):263-267. |
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| Authors: | Liang Ronghai Tang Jinzhi and Liu Hongwei State Key Laboratory for Powder Metallurgy Central South University of Technology Changsha P R China |
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| Affiliation: | Liang Ronghai,Tang Jinzhi and Liu Hongwei State Key Laboratory for Powder Metallurgy,Central South University of Technology,Changsha 410083,P. R. China |
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| Abstract: | Upsetting die blocks materials used for fabricating engine valve should possess excellent red hardness, and certain toughness and good processing ability. The service life of upsetting die block made of W252 or W232 high tungsten alloy studied is over 20 times more than that made from CuW80 alloy by longrun confirmation tests. Especially in fabrication of exhaust valve, the finished product ratio has increased to 98.2% from previous 57.8%. |
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| Keywords: | valvered hardnesshigh tungsten upsetting die blocks materialelectric upsetting |
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