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Powder metallurgy characteristics
Author:
Powder metallurgy has a unique chemical composition and mechanical and physical properties, which can not be obtained by traditional casting methods. The use of powder metallurgy technology can be directly made into porous, semi-dense or fully dense materials and products, such as oil bearings, gears, cams, guide rods, tools, etc., is a less cutting process.
(1) Powder metallurgy technology can minimize the segregation of alloy components and eliminate coarse and uneven casting structures. 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 alloys, heat-resistant Al alloys, superalloys, powder corrosion-resistant stainless steel, powder high-speed steel, intermetallic high-temperature structural materials, etc.) plays 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) can easily achieve a variety of types of composite, give full play to the characteristics of each component materials, is a low-cost production of high-performance metal-based and ceramic composite materials technology.
(4) It can produce materials and products with special structures and properties 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) can achieve near net formation and automated mass production, which can effectively reduce the production of resources and energy consumption.
(6) can make full use of ore, tailings, steelmaking sludge, rolling iron scale, recycling scrap metal as raw materials, is an effective material recycling and comprehensive utilization of new technology.
Our common machining tools, metal grinding tools, many are manufactured by powder metallurgy technology.
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