Abstract
PIM is having a significant impact on the production of wear resistant components from allowys, oxides, nitrides, and carbides. The good performance properties and availability of uniform feedstocks provide credibility to the technology. Potentially, the fabrication of wear materials by PIM will be one of the most profitable PM technologies. Unlike metallic systems (such as stainless steel), there is no raw material cost penalty associated with the hard materials, since they already start as powders. It is the shape complexity of new designs that is pushing traditional manufactures to examine injection moulding. If higher precision can be demonstrated, the conversion to PIM will proceed rapidly, since post-sintering finishing operations often constitute 40% of the manufacturing cost. Already the cemented carbide industry is acquainted with elements of debinding (dewaxing) and sintering, so they will succeed in directing new components to the process. This might be the next major growth wave for PIM following the spurt in stainless steels that started in the late 1980s.
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