我厂的铸铁焊补工作量较大。多年来采用电弧冷焊和CO_2气体保护焊修复了大量的汽车缸体、缸盖和其他铸件,修复的质量较好。铸铁冷焊工艺具有操作方便、工效高、变形小、劳动强度小、加工性能好等优点。如采用低碳钢焊条或使用镍基焊条与低碳钢焊条混合焊补铸 I plant a large amount of work cast iron welding. Over the years the use of arc cold welding and CO_2 gas shielded welding repair a large number of car cylinders, cylinder heads and other castings, the repair of better quality. Cast iron cold welding process has the advantages of easy operation, high efficiency, small deformation, small labor intensity, processing performance and so on. Such as the use of low-carbon steel electrodes or nickel-based welding electrodes and low carbon steel welding mixed casting