砂泵叶轮是砂泵上的重要零部件之一。尤其是矿山使用较多的2″砂泵,其叶轮材质一般为白口铸铁。由于种种原因,在部分矿山中它还不能一次成型,通常是采用增大内孔再浇注一层巴氏合金来解决这个问题(图)。按1987年物价计算,平均每浇注一只叶轮需费用20元,且合金回收量不多,所以采用巴氏合金浇注 Sand pump impeller is an important part of the sand pump. In particular, the mine uses more 2 "sand pump, the impeller material is generally white cast iron.For various reasons, in some mines it can not be a molding, usually by increasing the hole and then pour a layer of Babbitt to To solve this problem (Figure). According to the 1987 price calculation, the average cost per pouring an impeller 20 yuan, and the alloy recovery is small, so the use of pasteurized alloy