Method for the manufacture of a metal part

Abstract

A method for the manufacture of a metal part, the method including the steps: a) compacting agglomerated spherical metal powder to a preform, b) debinding and sintering the preform to a part at a temperature not exceeding 1275° C., c) performing one of the following steps: i) compacting the part to a density of more than 95% of the theoretical density, or ii) compacting the part to a density of less than 95% of the theoretical density and sintering the part at a temperature not exceeding 1275° C. to a density of more than 95% of the theoretical density, and d) subjecting the part to hot isostatic pressing at a temperature not exceeding 1200° C. The method provides an industrial process to produce fully dense parts from alloys which normally cannot be produced and still give good impact properties, which is vital for many applications where there alloys are used.

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