Characteristics 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 our common machining tools and
hardware abrasives are made by powder metallurgy technology.