Low-nickel nitrogen-containing austenitic stainless steel non-consumable electrode gas shielded welding wire and preparation method thereof
A technology of austenitic stainless steel and gas-shielded welding wire, applied in welding equipment, manufacturing tools, welding media, etc., can solve problems such as hot cracks in the weld zone, loss of nitrogen element, pitting corrosion of nitride precipitation, etc., and achieve the goal of depositing metal High strength, less pore defects, and the effect of promoting grain refinement
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[0033] Embodiment 1: The chemical composition and proportion of a low-nickel nitrogen-containing austenitic stainless steel non-melting electrode gas shielded welding wire according to the weight percentage are C: 0.03%-0.08%, Si: 0.30%-0.65 %, Mn: 6.50% to 8.50%, P: ≦0.05%, S: ≦0.01%, Cr: 17.50% to 18.50%, Ni: 2.20% to 2.90%, Mo: 0.03% to 0.10%, Cu: 1.00% ~2.00%, N: 0.15%~0.35%, Co:≦0.05%, Nb+Ti+V≦0.05%, and the rest iron composition.
[0034] The method for preparing the above-mentioned low-nickel nitrogen-containing austenitic stainless steel non-melting electrode gas-shielded welding wire is carried out according to the following steps:
[0035] 1. Material preparation: according to the chemical composition and proportion of the welding wire, weigh the furnace charge of pure iron, massive ferrochromium, chromium carbide, chromium nitride, nickel plate, electrolytic manganese, ferrosilicon, metal molybdenum, copper block, aluminum particles, silicon calcium Block and silic...
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