IMPACTING METHOD AND MACHINE FOR FORMING COMPACTS

摘要

A process and apparatus for producing solid articles from loose particulate materials that are particularly useful in the production of green compacts used in sintering processes. A charge (30) is formed by charging a mass of loose particulate material into the cavity (34) of a die between opposed first (28) and second die (128) punches, operably disposed to slide within the cavity (34), and limited to reciprocating motion in a linear direction. The first (28) and second die (128) punches are preloaded against the charge (30) and then first and second cyclically reciprocating impacting forces are applied to the first (28) and second (128) die punches, respectively, along the linear direction while holding the die (26) fixed so as to prevent damping of the impacting forces. The first and second cyclical reciprocating impacting forces may be substantially equal and may be substantially asynchronous or synchronous.