Method for holding brazing material during a brazing operation

Patent metadata

Field	Value
Publication number	US-9873171-B2
Application number	US-201615348997-A
Country	US
Kind code	B2
Filing date	Nov 11, 2016
Priority date	Dec 19, 2013
Publication date	Jan 23, 2018
Grant date	Jan 23, 2018

Abstract

A method for holding a sintering filler material during a brazing/sintering operation for repairing a damaged area of a component wherein the component is in either a bonding face down position, bonding face vertical position or bonding face up position. The method includes providing a wire mesh and attaching the wire mesh to the component in a location corresponding to the damaged area. Further, the method includes forming a gap between the wire mesh and the component. Moreover, the sintering filler material may be inside the wire mesh or both inside and outside the wire mesh in order to secure the sintering filler material to the damaged area.

First claim

What is claimed is:

1. A method for holding a sintering filler material during a sintering operation for repairing a damaged area of a component wherein the component is in either a bonding face down position, bonding face vertical position or bonding face up position, comprising:
attaching a first quantity of sintering filler material to the damaged area;
positioning a wire mesh over the first quantity of sintering filler material;
attaching the wire mesh to a non-damaged surface of the component such that a gap portion of the wire mesh forms a gap between both the damaged and non-damaged areas of the component wherein the sintering filler material fills the gap and the wire mesh hinders creep of the sintering filler material; and
attaching a second quantity of sintering filler material onto the wire mesh.

2. The method according to claim 1 further including cleaning the damaged area by performing a fluoride ion cleaning procedure for the component or localized grinding on the damaged area.

3. The method according to claim 1 wherein the sintering filler material includes a multi-layer filler structure.

4. The method according to claim 3 wherein the multi-layer filler structure includes a putty/putty two layer configuration.

5. The method according to claim 3 wherein the multi-layer filler structure includes a plural layer putty-powder/slurry configuration.

6. The method according to claim 1 wherein the wire mesh is attached to the component by a fusion welding method.

7. The method according to claim 1 wherein the wire mesh is fabricated from a material which is metallurgically compatible with sintering filler material.

Assignees

• Siemens Energy Inc

Inventors

• Li Hang
• Garcia Mark A
• Ghunakikar Somesh J
• Lowe William J

Classifications

• B23K3/087

  Soldering or brazing jigs, fixtures or clamping means · CPC title

• B23P6/04

  Repairing fractures or cracked metal parts or products, e.g. castings · CPC title

• B23K1/206

  Cleaning · CPC title

• B23K37/06

  for positioning the molten material, e.g. confining it to a desired area · CPC title

• F01D9/02

  Nozzles; Nozzle boxes; Stator blades; Guide conduits {, e.g. individual nozzles (nozzle boxes F01D9/047)} · CPC title