Abstract: High frequency induction heat has been used to obtain a wear-resisting layer Cr13Ni2B on the surface of mild steel.Effect of welding fluxes on technologic property such as the combination ability of the layer with the base metal,surface quality,detachability,were studied.The results show that the amount of boric anhydride produce a comparatively marked effect on the technologic property of the wear-resisting layer Cr13Ni2B,and then welding flux 431,and fluoride little.Adding the right amount of fluxes can remove the oxide of powder material surface,and depress the melting point of the powder efficiently,and the slag on it can easily brush off,and finally get a wear-resisting layer whose surface is fine with expectant thickness which can get to 2.5 mm.The right amount of fluxes can spur the layer firmly metallurgical joint the underside steel.Adding 3wt% boric anhydride and 8wt%-12wt% welding flux 431 and 1wt% fluorite or cryolite into the alloy powder Cr13Ni2B,the effect of high frequency induction heating deposit is the best.