从1975年起我们采用氧炔焰喷焊工艺修复旧件和提高农机工作部件的耐磨性.我们首先在中耕机锄铲上进行了喷焊试验,工作20个班次后检查喷过的铲刃只是磨亮了,而没有喷的铲刃磨损5毫米.相继又在圆盘耙上作喷焊试验,工作275小时后检查,喷过的耙片磨损很少,没有喷过的直径磨损10毫米.为了进一步扩大其应用范围,从1976年开始,我们先后修复了气门、变速箱拨叉、花键轴、摇臂、齿轮、凸轮轴等,经装车使用,效果良好.现将我们采用的工艺 Since 1975, we use oxygen acetylene flame spray welding process to repair the old parts and improve the wear resistance of agricultural working parts.We first sprouting on the cultivator spatula test, check the spatula sprayed after 20 shifts Just polished, and no spray blade wear 5 mm.Once in the disc harrow for the welding test, after 275 hours of work inspection, the blade sprayed little wear, no spray diameter wear 10 mm In order to further expand its application range, we have repaired the valve, gear shift fork, spline shaft, rocker arm, gear, camshaft and so on, which have good effect after loading by truck since 1976. Now we adopt Process