A high toughness 17-4ph precipitation hardening stainless steel metal cored welding wire
A precipitation hardening, stainless steel technology, applied in the field of metal-cored welding wire, can solve the problems of difficult welding of martensitic precipitation hardening stainless steel, uncontrollable structure ratio, decrease in strength of welded joints, etc., to achieve stable welding arc, improve welding performance and melting speed. quick effect
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Embodiment 1
[0032] Embodiment 1. A 430 stainless steel strip of 10×0.3 (width 10 mm, thickness 0.3 mm) is selected, and the filling rate is 28%. After drawing and reducing the diameter, a welding wire with a diameter of 1.2 mm is obtained.
[0033] The mass percentages of each component in the powder core are: the mass percentage of metal chromium powder is 25%, the mass percentage of metal nickel powder is 18%, the mass percentage of electrolytic metal manganese is 3%, molybdenum iron (Mo %=60%) is 5% by mass, ferroniobium (Nb%=60%) is 2% by mass, pure copper powder is 15% by mass, and 45% ferrosilicon is 2% by mass. The mass percentage of sodium carbonate is 3%, and the mass percentage of potassium titanate is 4%. The balance is reduced iron powder.
[0034] The welding current used during welding is 50A, and the welding voltage is 22V. The welding method is argon arc welding. The welding shielding gas is pure argon gas, and the shielding gas flow rate is 10L / min.
Embodiment 2
[0035] Embodiment 2. A 430 stainless steel strip of 10×0.3 (width 10 mm, thickness 0.3 mm) is selected, and the filling rate is 30%. After drawing and reducing the diameter, a welding wire with a diameter of 1.6 mm is obtained.
[0036] The mass percentages of each alloy composition in the powder core are: the mass percentage of metal chromium powder is 20%, the mass percentage of metal nickel powder is 16%, the mass percentage of electrolytic metal manganese is 2%, molybdenum iron (Mo%=60 %) is 4%, the mass percentage of ferroniobium (Nb%=60%) is 1%, the mass percentage of pure copper powder is 13%, and the mass percentage of 45% ferrosilicon is 0%. The mass percentage of sodium carbonate is 3%, and the mass percentage of potassium titanate is 4%. The balance is reduced iron powder.
[0037] The welding current used during welding is 90A, and the welding voltage is 23V. The welding method is argon arc welding. The welding shielding gas is pure argon gas, and the shielding...
Embodiment 3
[0038]Embodiment 3. A 430 stainless steel strip of 10×0.3 (width 10 mm, thickness 0.3 mm) is selected, and the filling rate is 35%. After drawing and reducing the diameter, a welding wire with a diameter of 3.2 mm is obtained.
[0039] The mass percentages of each alloy composition in the powder core are: the mass percentage of metal chromium powder is 17%, the mass percentage of metal nickel powder is 13%, the mass percentage of electrolytic metal manganese is 1%, molybdenum iron (Mo%=60 %) is 3%, the mass percentage of ferroniobium (Nb%=60%) is 0.5%, the mass percentage of pure copper powder is 11%, and the mass percentage of 45% ferrosilicon is 1%. The mass percentage of sodium carbonate is 2%, and the mass percentage of potassium titanate is 2%. The balance is reduced iron powder.
[0040] The welding current used during welding is 120A, and the welding voltage is 24V. The welding method is argon arc welding. The welding shielding gas is pure argon gas, and the shieldi...
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