Tungsten Copper Composite Power Injection Molding (1/2)

Inspired from powder injection molding of conventional powder metallurgy (PM), tungsten-copper composite powder injection molding technology is based on the injection of tungsten skeleton is formed, and it breaks the limitations of conventional Infiltration produced tungsten-copper composite. Metal injection molding (MIM) is a kind of process that suitable for fabricating the products with complex or irregular shape, and it was first extended by the plastic injection molding industry. In recent years, a substantial increase in the content of the solid particles and the binder is completely removed during sintering densification of the compact, resulting in metal products with high strength, excellent wear and corrosion resistance.

Its basic steps is that choose the metal powder meet the requirements of MIM (includes shape of powder, the granularity, the content, specific surface and so on) and corresponding binder (MIM is the core technology, with enhanced liquidity and maintain compact shape function), At a certain temperature using appropriate methods uniformly mixing the powder with a binder feed, injection molding after granulating, injection molding and degreasing obtained the products. Tungsten-copper composite material due to its high strength, high density, high melting point, good chemical stability, and is a good electrical and thermal conductivity of the heat sink material, not only from the field of military aviation in a number of electrical contacts and electrodes have a wide range the use of some of the tightness in demanding electronic packaging materials is also a good choice.