FLUX FOR WELDING AND SURFACING Russian patent published in 2015 - IPC B23K35/362 

FIELD: metallurgy.

SUBSTANCE: flux contains components in the following ratio in wt %: dusty ladle slag of rail steel production - 30.0-50.0, dusty wastes of aluminium production - 5.0-30.0, liquid glass 0 40.0-65.0. Said dusty ladle slag of rail steel production comprises the following components, wt %: FeO 0.3-1.5, MnO 0.1-2.0, CaO 50.8-53.8, SiO₂ 24.5-26.2, CaF₂ 0.01-1.0, Al₂O₃ 3.4-5.0, MgO 7.8-8.7, C_tot 0.1-0.6, S 0.1-0.4, P 0.3-0.6. Said dusty wastes of aluminium production feature the following chemical composition, wt %: Al₂O₃ 21-43.27, F 18-27, Na₂O 8-13, K₂O 0.4-6, CaO 0.7-2.1, SiO₂ 0.5-2.48, Fe₂O₃ 2.1-2.3, C_tot 12.5-28.2, MnO 0.03-0.9, MgO 0.04-0.9, S 0.09-0.46, P 0.1-0.18.

EFFECT: lower costs, flux higher strength, stable arc, reduced loss of doping elements.

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