我厂自1953年以来,在制造直径大于200毫米的电动机定、转子片冷冲模时;凸凹模刃口一般都采用合金堆焊工艺。这样就可以大大节约合金模具钢材和加工工时。堆焊层硬度为HRC58～62°。使用寿命相当于用Cr12钢制造的模具。多年来我们认为这是一种值得推广的工艺。一、焊条我厂现采用上海东亚电焊材料制造厂生产的“上焊64A”焊条。此种焊条是一种钛碱型渣系;相当于钨9％类高速钢合金成分。此类焊条焊接工艺良好,焊缝成形美观;可以交直流两用。焊缝金属近似化学成分为:碳～0.4％,铬～4.5％,钒～0.5％,钨～9％,钼～2％。焊后空冷硬度HRC> I plant since 1953, in the manufacture of diameter greater than 200 mm motor stator, rotor die when the die; punch and die edge are generally used alloy surfacing process. This will greatly save the alloy die steel and working hours. Surfacing hardness of HRC58 ~ 62 °. The service life is equivalent to the mold made of Cr12 steel. For years we think this is a craft worth promoting. First, the electrode I plant is now using Shanghai East Asia welding materials factory production of “welding 64A” electrode. This electrode is a type of titanium base slag system; equivalent to 9% tungsten high-speed steel alloy composition. Welding of such electrodes is good, beautiful weld appearance; can be AC ​​and DC. Approximate chemical composition of the weld metal: carbon ~ 0.4%, chromium ~ 4.5%, vanadium ~ 0.5%, tungsten ~ 9%, molybdenum ~ 2%. Air cooling after welding HRC>