Features of Powder Metallurgy

       

Powder metallurgy has unique chemical composition and mechanical and physical properties, which can not be obtained by traditional casting methods. Powder metallurgy technology can be directly used to make porous, semi dense or fully dense materials and products, such as oil bearing, gear, cam, guide rod, cutting tool, etc.

(1) Powder metallurgy technology can minimize the segregation of alloy components and eliminate the coarse and uneven casting structure. It plays an important role in the preparation of high performance rare earth permanent magnetic 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, intermetallic high-temperature structural materials, etc.).

(2) A series of high performance non-equilibrium materials such as amorphous, microcrystalline, quasicrystal, nanocrystalline and supersaturated solid solution can be prepared. These materials have excellent electrical, magnetic, optical and mechanical properties.

(3) It is a low-cost technology to produce high-performance metal matrix and ceramic composites.

(4) It can produce materials and products with special structures and properties that can not be produced by ordinary smelting method, such as new porous biomaterials, porous separation membrane materials, high-performance structural ceramic abrasives and functional ceramic materials.

(5) It can realize near net formation and automatic batch production, thus, it can effectively reduce the production resources and energy consumption.

(6) It can make full use of ore, tailings, steelmaking sludge, steel rolling scale and waste metal as raw materials. It is a new technology for effective material regeneration and comprehensive utilization.

Many of common machining tools and hardware abrasives are made by powder metallurgy technology.

 

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