Nickel-based alloy surfacing welding process for alloy tank

The invention relates to a nickel-based alloy surfacing welding process for an alloy tank. A welding process is carried out by way of cold metal transition welding, and shielded welding is carried outby adopting consumable electrode gas in the welding process. During use, the dilution rate of the surface of the surfacing is reduced greatly, the high-temperature resistance and the corrosion resistance of a material are improved and a welding material is saved by adopting the nickel-based alloy surfacing welding process by way of cold metal transition welding. Meanwhile, a multi-pass surfacingmode with at least two passes is adopted in the welding process to fill the alloy tank, so that the welding defects of incomplete fusion, solder skips and the like during welding can be solved, and the welding quality is guaranteed. 本发明涉及一种用于合金槽的镍基合金堆焊焊接工艺，焊接过程采用冷金属过渡焊接方式进行，焊接过程采用熔化极气体进行保护焊。使用时，利用冷金属过渡焊接方式进行镍基合金堆焊的焊接工艺，极大的降低了堆焊表面的稀释率，提高了材料的耐高温耐腐蚀性，并节省了焊接材料。同时，焊接过程采用至少两道的多道堆焊方式，填满合金槽，能够解决焊接时产生的未熔合、漏焊等焊接缺陷，保证焊接质量。