新的堆焊用陶质焊药埋弧自动堆焊是修复许多拖拉机和农业机器零件的一种最先进的方法。但是在农业部门的修理企业中广泛运用这种方法还有一定困难:首先,为了堆焊摩擦面硬度高于250H_B 的热处理过的零件,必须采用特殊钢焊丝,如30ХГСА焊丝等;其次,在堆焊这些零件时要用特种焊药,而焊药的消耗量是非常可观的。实验表明,采用加有20～50%铸铁屑同时利用碎渣 The new submerged arc welding with ceramic welding flux is a state-of-the-art method of repairing many tractors and agricultural machine parts. However, it is still difficult to widely use this method in repair shops in the agricultural sector. First, special steel welding wire, such as 30ХГСА welding wire, etc., must be used in order to build up heat-treated parts with frictional surface hardness higher than 250H_B. Secondly, Welding these parts to use special flux, and flux consumption is very impressive. Experiments show that the use of plus 20 ~ 50% cast iron scrap while using debris