US Patent No. 11,111,800

METHOD FOR MANUFACTURING AN IMPELLER OF A ROTARY MACHINE AND AN IMPELLER MANUFACTURED USING SUCH A METHOD


Patent No. 11,111,800
Issue Date September 07, 2021
Title Method For Manufacturing An Impeller Of A Rotary Machine And An Impeller Manufactured Using Such A Method
Inventorship Robin Rettberg, Winterthur (CH)
Jonas Ess, Basel (CH)
Marc Huber, Vogelsang AG (CH)
Martin Hartmann, Windisch (CH)
Assignee SULZER MANAGEMENT AG, Winterthur (CH)

Claim of US Patent No. 11,111,800


1. A method for manufacturing an impeller of a rotary machine, the impeller comprising at least one vane limiting an inner channel which is at least partly closed, the method comprising:successively manufacturing the impeller from several material layers by a build-up process from a powder, by applying the powder in each case to a processing plane for the production of each material layer;
producing a material layer from the powder by a selective energy input; and
determining a structural orientation for the impeller, according to which the impeller is built up in layers, the structural orientation being defined by only a first angle and a second angle, the first and second angles defining the relative position of the impeller to the processing plane.