[PDF] Design fabrication and analysis of compaction die for powder

What is powder metallurgy process?

Processing of Metal Powders ? Powder Metallurgy Process (P/M process) ?The process where metal powders are compacted into desired and often complex shapes and sintered to form a solid piece ? Process was first used five thousand years ago by Egyptians to make iron tools 9.

What are the tolerances for powder metallurgical manufacturing processes?

Tolerances for powder metallurgical manufacturing processes are moderate, typically .003-.005 inches. For these reasons, powder processing would be most competitive with other processes in the manufacture of large numbers of small parts, that do not require high mechanical strength or close tolerances.

Why is tooling important in powder metallurgy manufacturing?

Tooling is an integral factor in manufacturing process design. For example, parts requiring long thin punches should be avoided, since punch rigidity is critical. When designing a powder metallurgy manufacturing process it is most often advantageous to limit part complexity as much as possible.

What is the difference between powder metallurgy and hot forging?

The combination of powder metallurgy and forging is able to produce extremely high quality parts. A part is powder manufactured with about 15%-20% porosity, and then hot forged. Typically the forging is flashless. Hot forging eliminates porosity, increasing the density of the part.