Method for repairing an upstream rail of a turbine engine turbine casing

Patent metadata

Field	Value
Publication number	US-10759010-B2
Application number	US-201515510866-A
Country	US
Kind code	B2
Filing date	Sep 3, 2015
Priority date	Sep 11, 2014
Publication date	Sep 1, 2020
Grant date	Sep 1, 2020

Abstract

A method for repairing an upstream rail of a turbine engine turbine casing, the casing including a casing body extending along a longitudinal axis, the upstream rail including: a base including a radial surface, extending substantially radially from the casing body; a plate including an upper surface, extending substantially along the longitudinal axis; and a connection portion between the base and the plate, including a concave surface connecting the radial surface and the upper surface, the concave surface and the radial surface extending on either side of an edge, the method including: covering a surface with a solder, the surface including the upper surface and the concave surface, such that the solder extends substantially until the edge; and a step of machining the covered surface, in a single action, in the direction of the radial surface, and at least until the edge, so as to reshape the surface.

First claim

The invention claimed is:

1. A method for repairing an upstream rail of a turbine engine turbine casing, said casing including a casing body extending along a longitudinal axis, said upstream rail including:
a base including a radial face, extending substantially radially from the casing body,
a plate including an upper face, extending substantially along the longitudinal axis,
a connection portion between the base and the plate, including a concave face connecting the radial face and the upper face, the concave face and the radial face extending on either side of an edge,

said method including:
covering a surface with a solder, said surface including the upper face and the concave face, such that said solder extends until the edge,
machining the covered surface, in a single action, in a direction toward the radial face, so as to reshape the surface, wherein the machining of the covered surface is performed on a portion of the radial face beyond the edge.

2. The repairing method according to claim 1 , further comprising performing an additional step of machining the radial face.

3. The repairing method according to claim 1 , wherein the covering is performed by Tungsten Inert Gas welding.

4. The method according to claim 1 , wherein the covered surface includes a downstream side face and a lower face of the plate.

5. The repairing method according to claim 1 , wherein the machining of the covered surface is performed in a single action so that machining springback is avoided in the concave face.

Assignees

• Safran Aircraft Engines

Inventors

• Delaporte Nicolas Daniel
• Bilioniere Marina Wilma
• Breugnot Thierry Michel
• Durand Didier Noël

Classifications

• A47B96/021

  Structural features of shelf bases · CPC title

• A47B47/04

  made mainly of wood or plastics · CPC title

• B23K9/167

  and of a non-consumable electrode · CPC title

• F05D2230/10

  by removing material · CPC title

• B23P6/007 Primary

  using only additive methods, e.g. build-up welding · CPC title