Powder metallurgy has a unique chemical composition and mechanical and physical properties that are not available with conventional fusion casting methods. The use of powder metallurgy technology can directly produce porous, semi-dense or fully dense materials and products, such as oil-impregnated bearings, gears, cams, guides, tools, etc., is a less cutting process.
(1) Powder metallurgy technology can minimize the segregation of alloy components and eliminate coarse and uneven cast structure. Preparation of high performance rare earth permanent magnet materials, rare earth hydrogen storage materials, rare earth luminescent materials, rare earth catalysts, high temperature superconducting materials, new metal materials (such as Al-Li alloy, heat resistant Al alloy, super alloy, powder corrosion resistant stainless steel, powder High-speed steel, high-temperature structural materials such as intermetallic compounds, etc.) play an important role.
(2) A series of high-performance non-equilibrium materials such as amorphous, microcrystalline, quasicrystal, nanocrystalline and supersaturated solid solution can be prepared, which have excellent electrical, magnetic, optical and mechanical properties.
(3) It is easy to realize various types of recombination, and give full play to the respective characteristics of each component material, and is a process technology for producing high-performance metal-based and ceramic composite materials at low cost.
(4) It can produce materials and products with special structure and performance that cannot be produced by ordinary smelting methods, such as new porous biological materials, porous separation membrane materials, high-performance structural ceramic abrasives and functional ceramic materials.
(5) Near net formation and automated mass production can be achieved, thereby effectively reducing production resources and energy consumption.
(6) It can make full use of ore, tailings, steelmaking sludge, rolling steel scales, and recycling waste metal as raw materials. It is a new technology that can effectively carry out material regeneration and comprehensive utilization.