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.
吕 浩. 提高粉末冶金汽车水泵轮毂上端中间和顶部密度的几种方法[J]. , 2018, 28(04): 82-85.
Lü Hao. Methods to improve the density of the center and top of powder metallurgy automobile water pump hub. , 2018, 28(04): 82-85.
2018, Vol. 28 
