For polymer powders in some articles it was mentioned as powder metallurgy and in some articles, it was compression molding. For polymers, is both are same
Respected Madam,
1. Powder Metallurgy: Powder metallurgy is a term covering a wide range of ways in which materials or components are made from metal powders. This process can avoid, or greatly reduce, the need to use metal removal processes, thereby drastically reducing yield losses in manufacture and often resulting in lower costs. Powder metallurgy is a metal forming process in which compacted metal powders are heated to just below their melting point.
2. Compression Molding: Compression molding is a method of molding in which the molding material, generally preheated, is first placed in an open, heated mold cavity. The mold is closed with a top force or plug member, pressure is applied to force the material into contact with all mold areas, while heat and pressure are maintained until the molding material has cured.
For more insights about compression molding refer this link:
Chapter Compression Molding
Prajna Deepthi
As the name suggests, powder metallurgy is associated with metals specifically. The compression moulding process used for polymers is very similar to powder metallurgy. But, to use the term powder metallurgy for the processing of polymer is not correct in my view.
Yes, the processes are the same, although in metals the compression and temperature are higher.
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