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-10851653-B2
Application number	US-201715699241-A
Country	US
Kind code	B2
Filing date	Sep 8, 2017
Priority date	Sep 22, 2016
Publication date	Dec 1, 2020
Grant date	Dec 1, 2020

Abstract

A method for manufacturing a component of a rotary machine, the component extending to an axial direction and a radial direction vertical thereto, and has an inner channel, extending from a first end of a core of a center of the component and to a second end at a radial limiting surface of the component and which is at least partially closed. A blank includes the core of the component and is limited by an outer surface in the radial direction. The blank is subtractively processed in a first subtractive process step, such that an outer contour is elaborated in the area of the outer surface, which extends in the radial direction, and a part of the channel is manufactured, which radially extends in the blank to the first end. 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 surface of the component, adjacent channels being respectively separated by a separating wall, the method comprising:
identifying damaged areas of the component at the radial limiting 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 a core of 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,
the blank being subtractively processed in a first subtractive process step in such a manner, that an outer contour is elaborated in the area of the outer surface, the contour extending at least in the radial direction, and then the channels are finished by a build-up process on the blank,
the second end of the channel opening in the radial limiting surface of the component.

2. The method according to claim 1 , wherein, wherein all removed damaged areas are replenished again by the build-up process.

3. A method for manufacturing a component of a rotary machine, the component extending in an axial direction and in a radial direction vertical thereto, and having at least one inner channel extending from a first end of a core of a center of the component, and to a second end at a radial limiting surface of the component and which is at least partially closed, the method comprising:
providing a blank comprising the core of the component, the blank being limited by an outer surface in the radial direction;
subtractively processing the blank in a first subtractive process step in such a manner, that an outer contour in an area of the outer surface is elaborated, the outer contour extending at least in the radial direction, and a part of the channel is manufactured, the part at least partially extends radially in the blank to the first end; and
then finishing the channel by a build-up process on the blank, at least one material being used for the build-up process, the material being different from a material of the blank.

Assignees

• Sulzer Management Ag

Inventors

• RETTBERG Robin
• MAROCCIA Bruno

Classifications

• F01D5/005 Primary

  Repairing methods or devices · CPC title

• B22F10/80

  Data acquisition or data processing · CPC title

• 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

• F04D29/22 Primary

  specially for centrifugal pumps · CPC title