Method and treatment element blank for the production of a treatment element for a screw machine

Abstract

In a method for the production of a treatment element for a screw machine, a treatment element core of a first metal material is arranged in an inner space of a capsule of a hot isostatic pressing installation so that a contoured annular space is formed between a capsule wall and a treatment element core. The annular space is filled with a powder of a second metal material so as to produce an anti-wear layer. Afterwards, the treatment element blank is produced in such a way that the materials are combined by hot isostatic pressing to form a composite body. The treatment element blank is then post-processed to form the treatment element. The method according to the invention simplifies the production of treatment elements by in particular simplifying post machining and/or heat treatment of the anti-wear layer thus produced.

Dependencies are inferred from the claim text.