Secondary /Finishing Operations

A number of secondary and finishing operations can be applied after sintering, some of them are:

· Sizing : cold pressing the sintered part to improve dimensional accuracy.

· Coining : cold pressing to press details into its surface.

· Impregnation : oil fills the pores of the part

· Infiltration : pores are filled with a molten metal

· Heat treating : annealing can be done for stress relief in powder metallurgy part.

· Machining : creates geometric features that cannot be achieved by pressing, such as threads, side holes, and other details