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

Patent metadata

Field	Value
Publication number	US-11707808-B2
Application number	US-202016943795-A
Country	US
Kind code	B2
Filing date	Jul 30, 2020
Priority date	Sep 11, 2014
Publication date	Jul 25, 2023
Grant date	Jul 25, 2023

Abstract

An upstream rail of a turbine engine turbine casing, which includes a casing body extending along a longitudinal axis, includes 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 and upper faces, the concave and radial faces extending on either side of an edge. The upstream rail is repaired through a method including covering a surface with a solder, the surface including the upper and concave faces such that the solder extends until the edge, and 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.

First claim

The invention claimed is:

1. A repaired upstream rail of a turbine engine turbine casing, said casing including a casing body extending along a longitudinal axis, said upstream rail comprising:
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 repaired upstream rail including:
a covered surface with a solder, said covered surface including the upper face and the concave face, such that said solder extends until the edge, and
the covered surface has been reshaped by machining on a portion of the radial face to form a repaired concave face.

2. The upstream rail according to claim 1 , wherein a depth of the machining of the radial face is at most 0.1 mm.

3. The upstream rail according to claim 1 , wherein the solder is applied by Tungsten Inert Gas welding.

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

5. The upstream rail according to claim 1 , wherein the covered surface has no machining springback in the concave face.

Assignees

• Safran Aircraft Engines

Inventors

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

Classifications

• B23P6/007 Primary

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

• A47B96/021

  Structural features of shelf bases · CPC title

• B23K9/044

  Built-up welding on three-dimensional surfaces · CPC title

• B23K9/048 Primary

  on cylindrical surfaces · CPC title

• B23K9/167

  and of a non-consumable electrode · CPC title