我们用土办法,就地取材,浇注成功了250摩托车上用的活塞。具体办法是:首先自制一套钢模。内模结构如图1。五块内模靠螺钉和定位圈固定在一起。外模如图2。它的合缝处底部开有浇注孔,用来安装浇注管,并用外模紧固圈固定。浇注前,将废旧的活塞或铝合金打碎,放在坩锅内加热。加热到900℃时,铝合金熔化。清除氧化层及杂质,便可浇注。浇 We use the soil method, local materials, pouring 250 successful motorcycle piston. The specific approach is: first homemade a set of steel mold. Internal model structure shown in Figure 1. Five internal mold by screw and positioning ring fixed together. Outer mold shown in Figure 2. At the bottom of the joint, there is a pouring hole for installing a pouring pipe and fixed with an outer mold fastening ring. Before casting, the waste piston or aluminum alloy broken, placed in the crucible heating. When heated to 900 ° C, the aluminum alloy melts. Clear the oxide layer and impurities, can pouring. Poured