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| Methods to improve the density of the center and top of powder metallurgy automobile water pump hub |
| Lü Hao |
| （Laizhou Xinmao Machinery Factory， Laizhou 231427， China） |
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Abstract Powder metallurgy automobile water pump hubs generally require a large clasp force （also known as the force fell off the hub）， good wear resistance， high strength， good corrosion resistance， etc. Such requirements make a high demand for equipment， molds， processes， etc.， of which the clasp force is the most important. The upper end of the automobile water pump hub is mostly a conical surface， and the structure is quite special. During pressing， it is easy to cause a low density in the center and top ends. The clasp force is depending on the density in the case that other conditions are equal. Therefore， in order to improve the clasp force， it is necessary to increase the center and top density of the hub. Starting from the actual production and the basic structure of the hub， three methods to increase the density of the center and top of the hub were introduced.
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Received: 07 March 2017
Published: 29 August 2018
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| 参考文献：1、印红羽，张华诚。 粉末冶金设计手册 机械工业出版社 2002.12、周作平，申小平。粉末冶金机械零件实用技术 化学工业出版社 2006.13、韩凤麟。粉末冶金零件设计与应用必备 中国机械通用零部件工业协会粉末冶金专业分会 出版发行 2001.3 |
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2018, Vol. 28 
