Powder Metallurgy products industry in China started in the mid - 1950 - s. with the development of automobile industry, and the material saving in itself, it attracts more and more attention.At present, the production of Powder Metallurgy parts has entered the high speed development period. In recent years, due to the rise of some new technologies, such as mechanical alloying, metal powder injection molding and forming temperature, injection forming, microwave sintering, the discharge plasma sintering, selfpropagating high temperature synthesis, sinter hardening, etc., makes the powder metallurgy materials and technology has been paid attention to by the countries, its application is becoming more and more widely.At present , the Powder Metallurgy technology is developing towards high densification, high-performance, integration and low cost. In recent years, a series of powder metallurgy forming new technology emerge in endlessly, and presents the accelerate development situation, metal injection molding, warm flow compaction pressure forming, forming, injection forming, new technology constantly emerging, such as high speed compacting makes high density powder into a shape technology got great development.
Needed parts in automobile manufacturing are so many, these parts must meet the requirements of strict and contradict each other. And the emergence of powder metallurgy products greatly embodies the need of this requirement. On the one hand, the use of powder metallurgy products in the automotive industry, the application of very high precision, high surface finish, mechanical performance is good, the mainest is high reliability; Using powder metallurgy products, on the other hand, can be mass produced in a reasonable price, improve the economic benefit.