Powder metallurgy plunger pump body class plug structure that takes shape

The utility model provides a powder metallurgy plunger pumps plug structure that takes shape, includes plug body, its characterized in that: the cylindric barred body of plug body for having the different diameters of multistage is equipped with the base in the bottom of plug body, and the base is the circular structure of two side edgings, and the diameter behind the base edging is greater than the diameter of cylindric barred body, and the hoop is equipped with the chamfer step that is used for increasing the cross section between base and cylindric barred body. The utility model has the advantages of simple and reasonable structure, it is effectual to take shape, has solved the problem of plunger pump plug fracture when taking shape betterly, has reduced the waste of the mould that causes because the plug is scrapped, has prolonged the mould utility life -span greatly, has improved product quality and work efficiency simultaneously. 种粉末冶金柱塞泵类成形芯棒结构，包括芯棒本体，其特征在于：所述芯棒本体为具有多段不同直径的圆柱状棒体，在芯棒本体的底部设有底座，底座为二侧削边的圆形