Magnesium alloy flux-cored brazing wire and preparation method thereof

Magnesium alloy cored solder wire and preparation method, belonging to the technical field of magnesium alloy welding materials. With magnesium as a cladding layer, wherein the drug core component package, with a width of 8-16mm magnesium, a thickness of 0.3-0.5mm; mass percentage of the components in the drug core is: mass% Zn dust was 30 -56%, by mass percentage of 2.5 to 7% Al powder, the mass percentage Na3AlF6 5-7%, by mass percentage KCl · MgCl2 · 6H2O was 30-50%, the balance is 0 or magnesium powder; powder filling 50% -60%. The present invention uses flame brazing, furnace brazing or soldering by TIG, the brazed joints with high shear strength.