The invention relates to a
smelting and
casting process for
smelting high-
nitrogen non-magnetic stainless steel by using an
argon oxygen furnace. The process comprises the following steps: firstly, melting 510-530kg / t of returned stub bars, 300-320kg / t of high-carbon
ferrochrome, 8-40kg / t of
ferromolybdenum, 14-30kg / t of electrolytic
nickel and 5-10kg / t of carburant by using an
intermediate frequency furnace, sampling the steel when the temperature is greater than or equal to 1560 DEG C, and then, putting the steel into the
argon oxygen furnace; then, supplementing
alloy into the
argon oxygenfurnace according to the sampling result, performing
decarburization to be less than 0.01%, adding 10-25kg / t of special
ferrosilicon for reduction, adding 200-240 kg / t of electrolytic
manganese, adding 5-10kg / t of aluminum, raising the temperature, and adding 20-30kg / t of
ferromanganese nitride alloy in two batches; discharging the steel into a steel
ladle; and transferring the steel to a pouringstation to be molded by pouring by adopting a top pouring method, and adding 0.5-1kg / t of protecting
slag into the mold. The process provided by the invention is environment-friendly and low in cost and increases the utilization ratio of
molten steel by 8%; and by adding the protecting
slag into the mold, the surface quality of an
electrode blank is ensured, and mold release is facilitated.