四川省农业机械修理厂七·二一工人大学复砂铸造工艺试验组,在厂党总支领导下,与铸工车间共同努力,对S195柴油机曲轴热射金属型复砂铸造工艺,进行了三十多次试验,取得了初步成果。该工艺是以预热到200～300℃的金属内、外模为基体,将树脂砂吹入内、外模的间隙内,形成高强度的模壳。外模上刨有很多0.5毫米宽的凹槽,作为出气通道,内、外模之间隙为6～ Sichuan Agricultural Machinery Repair Factory 7.21 Workers University of Compound Sand Casting Process Test Group, under the leadership of the factory party leadership, work together with the Casting Workshop, S195 diesel engine crankshaft heat injection metal composite sand casting process, conducted thirty Many tests, and achieved initial results. The process is preheated to 200 ~ 300 ℃ metal, the outer mold as the matrix, the resin sand blown into the gap between the outer mold to form a high-strength shell. The outer mold planing a lot of 0.5 mm wide groove, as the outlet channel, the gap between the inner and outer mold 6 ~