The invention relates to a preparation method of a
nickel-based
alloy welding wire, and belongs to the technical field of
welding material preparation. The preparation method comprises the following steps that 1,
alloy smelting is carried out, specifically, the
alloy comprises the following components of C, Si, Cr, Ti, Nb, W, Al, Fe, Mn, MO and the balance Ni; 2,
ingot casting is carried out; 3, hot
forging cogging is carried out, specifically, the alloy
ingot is put into a
heating furnace to be heated,
forging is carried out, and an alloy blank is obtained; 4, hot rolling annealing is conducted, specifically, the alloy blank is hot-rolled into a disc round wire; 5, acid
pickling, coping and cold drawing are conducted; 6,
dehydrogenation annealing is conducted; and 7, auxiliary
coating is carried out, specifically, the
welding wire penetrates through a container containing auxiliaries,
drying is carried out at the temperature of 18-30 DEG C, and the
nickel-based alloy welding wire is obtained. According to the method, through the steps of
metal raw material selection, alloy
smelting,
ingot casting, hot
forging cogging, hot rolling annealing, acid
pickling, coping, cold drawing,
dehydrogenation annealing and auxiliary
coating, the
nickel alloy welding wire has good
mechanical property,
corrosion resistance and
oxidation resistance.