▎ 摘　　要

NOVELTY - Preparing hard alloy comprises forming carbon-based carrier by supporting vanadium and chromium with biochar, and blending with graphene, tungsten carbide (WC) and cobalt (Co) to form a mixed material, mixing with graphene, mixing WC and Co, forming mixed material, mixing the material and ball milling, granulating, molding and sintering. USE - Preparing hard alloy used in electronic industry micro drill bit, metal material cutter, medical appliance, precision mold, etc. Also used as industrial tooth for common hard. ADVANTAGE - The hard alloy effectively improves the particle inhibitor in the hard distribution of the alloy, and realizes the control of crystal particle growth in the alloy hard. The process is convenient to operate and easy to realize amplification production. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for hard alloy prepared according to above mentioned method.