Method for manufacturing or for repairing a component of a rotary machine as well as a component manufactured or repaired using such a method

Patent metadata

Field	Value
Publication number	US-10864607-B2
Application number	US-201715699060-A
Country	US
Kind code	B2
Filing date	Sep 8, 2017
Priority date	Sep 22, 2016
Publication date	Dec 15, 2020
Grant date	Dec 15, 2020

Abstract

A method for manufacturing a component of a rotary machine, the component extends in an axial direction and a radial direction vertical thereto, and has an inner channel, extending from a first end in a center of the component to a second end at a radial limiting surface of the component and which is partially closed. A blank includes the center of the component and is limited by an outer surface in the radial direction. The maximum dimension of the outer surface in the radial direction is smaller than the dimension of the limiting surface in the radial direction, A first subtractive process step is performed such that a part of the channel is manufactured by a machining process, with the part extending from the first end of the channel to the outer surface of the blank. Afterwards the channel is finished by a build-up process on the blank.

First claim

The invention claimed is:

1. A method for repairing a component of a rotary machine, the component extending in an axial direction and a radial direction vertical thereto, and comprising a plurality of inner channels, each inner channel extending from a first end in a center of the component to a second end at a radial limiting radial surface of the component, the second end of the channel opening in the radial limiting surface of the component, adjacent channels being respectively separated by a separating wall, the method comprising:
identifying damaged areas of the component at the limiting radial surface or at one of the channels or at one of the separating walls;
manufacturing a blank by a machining removal or by a separating removal of the damaged areas, the blank comprising the center of the component; and
replacing the removed damaged areas by a build-up process on the blank to manufacture the final form of the component.

2. A method for manufacturing a component of a rotary machine, the component extending in an axial direction and a radial direction vertical thereto, and having at least one inner channel extending from a first end in a center of the component to a second end at a radial limiting surface of the component and which is at least partially closed, that the method comprising:
providing a blank comprising the center of the component, and the blank being limited by an outer surface in the radial direction, the maximum dimension of the outer surface in the radial direction being smaller than a dimension of the limiting surface in the radial direction;
performing a first subtractive process step in which a part of the channel is manufactured by a machining process, with the part extending from the first end of the channel to the outer surface of the blank; and
afterwards finishing the channel by a build-up process on the blank by application of at least part of a shapeless or a neutrally shaped material, at least one material is used for the build-up process, the at least one material being different from a material of the blank.

Assignees

• Sulzer Management Ag

Inventors

• RETTBERG Robin
• KRäNZLER THOMAS
• Danke Enno

Classifications

• B22F10/28

  Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM] · CPC title

• B22F5/009 Primary

  of turbine components other than turbine blades (of turbine blades B22F5/04) · CPC title

• B23P15/04 Primary

  turbine or like blades from several pieces · CPC title

• B23P15/02 Primary

  turbine or like blades from one piece · CPC title

• B23P6/002

  Repairing turbine components, e.g. moving or stationary blades, rotors, (B23P6/045 takes precedence) · CPC title