High-wear-resistance powder metallurgy materials and preparation method thereof

The invention relates to high-wear-resistance powder metallurgy materials and a preparation method thereof. The powder metallurgy materials comprise, by weight, 63-74 parts of iron powder, 7-10 partsof copper powder, 2-5 parts of molybdenum powder, 1-2 parts of phosphorus, 1-4 parts of manganese sulfide, 2-6 parts of carbon powder, 1-3 parts of manganese dioxide, 2-4 parts of lead oxide powder, 0.5-0.9 part of titanium carbide powder, 0.2-0.5 part of graphene powder, 0.6-1 part of yttrium powder, 1-3 parts of paraffin, 3-4 parts of silicon nitride, 3-7 parts of dibutyl phthalate, 4-7 parts ofstearic acid, 1-3 parts of polycarbonate, 5-10 parts of pentaerythritol, 1-2 parts of silicon carbide, 1-4 parts of dispersing agent and 2 -4 parts of lubricant. According to the powder metallurgy materials, phosphorus is added, and the components are reasonably proportioned, so that the wear resistance of materials can be effectively improved, the wear resistance of the materials can be effectively improved, and the mate