Tooling Design and Compaction Analysis on P/M Copper Bushes

Abstract

The successful production of P/M (powder metallurgy) components depends to a large extent on the tooling used for powder compaction. While designing the tool, the complexities arise from the interaction of the parameters such as powder characteristics, expected green density, the size and geometry of the product, and to whom the properties of the tool materials during compaction should be addressed. Floating type of compaction tooling set (die, punches, and core rod) was designed and fabricated. Pure electrolytic copper powder was compacted in the above-mentioned tool to obtain P/M copper bushes. Compaction pressure–density relationship and their influence on green strength are analyzed.

Keywords:

• Powder metallurgy
• Tool design
• Compaction
• Compaction pressure
• Copper P/M bush
• Floating die
• Green density
• Green strength
• Porosity
• Radial crushing strength
• Floating type compaction
• Density gradient
• Densification
• Lame's theory
• Interparticle friction

Acknowledgments