The invention discloses a high-temperature-resistant and wear-resistant powder metallurgy valve seat ring material. The high-temperature-resistant and wear-resistant powder metallurgy valve seat ringmaterial is formed by processing the following element raw materials of C, S, Co, Cr, Mo, Ni, N, V, W, Ca, Si, F, Mn, Cu and Fe; the high-temperature-resistant and wear-resistant powder metallurgy valve seat ring material comprises a matrix structure, first hard particles, second hard particles, a solid lubricant, copper infiltration powders and inevitable impurities; the matrix structure is martensite in which spherical carbide is distributed; the first hard particles and the second hard particles are dispersed in the matrix structure at different hardness; and according to the mass fractionaccounting for the total proportion of the valve seat ring material, the first hard particles are ceramic phase vanadium nitride particles with the mass fraction of 5%-15%, and the second hard particles are Co-based alloy particles with the mass fraction of 35%-60%. The valve seat ring material disclosed by the invention can effectively improve the high-temperature resistance and wear resistance of the powder metallurgy seat ring, and meets the requirements of a high-performance engine.

High-temperature-resistant and wear-resistant powder metallurgy valve seat ring material and manufacturing method thereof

A heavy-duty engine powder metallurgy valve seat material comprises the raw material components of, by mass, 10-50% of Fe-Mo-Si-and-Mn metal alloy powder, 5% of solid lubricants or the less, 5% of machining auxiliaries or the less and the balance base body forming powder. A preparation method of the heavy-duty engine powder metallurgy valve seat material comprises the steps that raw materials areevenly mixed in proportion; then mixed powder is pressed into a billet; then the billet is sintered and subjected to infiltrating copper treatment in a copper billet mode; and finally tempering treatment and cryogenic treatment are sequentially conducted. The abrasion resistance of the material is significantly improved, and the cost cannot be substantially increased.

Heavy-duty engine powder metallurgy valve seat material and preparation method thereof

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Heavy-duty engine powder metallurgy valve seat material and preparation method thereof