Plasma cladding flux-cored wire and method of making same

Abstract

The application provides a flux-cored wire for plasma cladding and a preparation method thereof, and belongs to the technical field of metal surface wear-resistant reinforcement. The technical scheme is that in the process of preparing the flux-cored wire, a layer of sodium silicate aqueous solution is brushed on the surface of the metal strip before alloy powder is laid on the metal strip, then the alloy powder is laid, and finally the flux-cored wire is formed by curling and drawing. In the plasma cladding process, the water molecules in the sodium silicate solution at the end of the flux-cored wire evaporate to form a silicon-oxygen network structure to prevent the powder from flowing out quickly, the sodium silicate glass body entering the molten pool floats on the surface of the alloy cladding layer to become a protective film, and the secondary oxidation of the cladding layer is prevented, and the flow leveling property and appearance quality of the cladding surface are improved.