Powder Metallurgy

Cold Die Pressing and Sintering: The powder is blended with a lubricant and fed into dies, pressed into shape, sintered in a controlled atmosphere and occasionally coined or repressed to achieve fine detail and dimensional precision.

Hot Die Pressing: Hot die pressing is similar to cold die pressing except that no lubricant is needed and the sintering occurs during the pressing, which is at an elevated temperature. This method offers better compaction, ductility and strength than cold pressing and sintering and it may be used to improve the soundness of castings.

Powder Injection Molding: In this process the powders are mixed with a binder, forming granular pellets which are heated to molding temperature and injected into a mold cavity. The part is then cooled and removed from the mold after which it is processed, sintered and, if necessary, undergoes secondary operations.

Back to Metal Manufacturing Processes Page

Please submit any questions or comments concerning this website to njsalamon@psu.edu.