Weather resistance steel argon-rich gas shielded welding wire for high-intensity railway vehicle
A technology for gas shielded welding wire and railway vehicles, which is applied in welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problems of unsatisfactory weather resistance and high cost of gas shielded welding wire, and achieve high weather resistance, beautiful shape, Good matching effect
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Embodiment 1
[0015] Example 1: A 200KG vacuum induction furnace is used to smelt steel for welding wire, and then a welding wire with a diameter of 1.18mm is produced through processes such as rolling, wire drawing, copper plating on the surface, and winding. The main chemical composition (mass percentage) of the welding wire is Cu 0.25%, Cr0.65%, Ni0.41%, C 0.08%, Si0.45%, Mn1.40%, P0.011%, S0.008%, more than The amount is iron and other unavoidable impurities.
[0016] Argon-rich gas (80% Ar+20% CO2) was used as shielding gas, and the above-mentioned welding wire was used for welding experiments. The welding current was 260-280A, the welding voltage was 32V, and the welding speed was 23.8cm / min. The mechanical properties of the obtained deposited metal are: tensile strength Rm=675MPa, yield strength Rcl=545MPa, elongation after fracture A=26%, impact energy (-40°C) Axv=172J of the deposited metal.
Embodiment 2
[0017] Embodiment 2: A 200KG vacuum induction furnace is used to smelt the steel for welding wire, and then a welding wire with a diameter of 1.18 mm is produced through processes such as rolling, wire drawing, copper plating on the surface, and winding. The main chemical composition (mass percentage) of the welding wire is Cu 0.22%, Cr0.36%, Ni0.26%, C 0.067%, Si0.33%, Mn1.31%, P=0.011%, S=0.011%, balance For iron and other unavoidable impurities.
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