Patent ID: 6060016
Filing Date: 2000-05-09
Classification: B22F

Abstract:
A method of forming a densified sintered product from a first metal powder, having a first melting temperature comprising the steps of:(a) compacting the first metal powder in a die to form an unsintered compact having an external surface;(b) applying a layer of a second metal powder to the external surface of the unsintered compact, the second metal powder having a second melting temperature, the second melting temperature being lower than the first melting temperature;(c) heating the unsintered compact to a temperature greater than the second melting temperature, and less than the first melting temperature, to form a sintered compact of the first metal powder and to melt the second metal powder to form a thin glaze of the melted second metal powder on the external surface of the sintered compact; and(d) pneumatically isostatically forging the sintered compact.