Machine component and gas turbine

Patent metadata

Field	Value
Publication number	US-9702561-B2
Application number	US-74590908-A
Country	US
Kind code	B2
Filing date	Oct 31, 2008
Priority date	Dec 4, 2007
Publication date	Jul 11, 2017
Grant date	Jul 11, 2017

Abstract

A machine component including a base body produced from a base material is provided. The base body is equipped in a partial region of the surface thereof with a plating made of an application material having a greater hardness and/or viscosity as compared to the base material. The plating is foamed by a number of plating elements that are applied to the base body in the longitudinal direction thereof in a tilted manner relative to the main flow direction of a hot gas flowing through the base body.

First claim

The invention claimed is:

1. A machine component, comprising:
a base body, comprising:
a base material;

wherein the base body is equipped in a partial region of a surface with a plating,
wherein the plating is made of an application material with a greater hardness and/or toughness than the base material, and
wherein the plating is formed by a plurality of plating elements, the plurality of plating elements are applied to the base body tilted in their longitudinal direction in relation to a main flow direction of a hot gas flowing through the base body, and
wherein the plating elements are arranged about the base body in a spiral manner thereby allowing an application of the plating elements to the base material such that stress on the material is reduced.

2. The machine component as claimed in claim 1 , wherein a tilt angle is greater than 0° and less than 90°.

3. The machine component as claimed in claim 1 , wherein the plurality of plating elements are positioned in a segmented configuration.

4. The machine component as claimed in claim 1 , wherein the plating elements are applied to the base body by welding.

5. The machine component as claimed in claim 4 , wherein the plating elements are applied to the base body by laser powder hardfacing.

6. The machine component as claimed in claim 1 , wherein the plating elements are applied to the base body by a spray build up.

7. The machine component as claimed in claim 3 , wherein the plating elements are introduced to a flat surface of the base body.

8. The machine component as claimed in claim 1 , wherein each plating element is incorporated into an assigned recess formed in the base body.

9. The machine component as claimed in claim 1 ,
wherein the machine component is a curve cooling air ring equipped on the surface with the plurality of plating elements incorporated into a plurality of recesses in the base body, and
wherein a plurality of cooling air channels are disposed in the base body.

10. A gas turbine, comprising:
a plurality of machine components, each comprising:
a base body, comprising:
a base material,

wherein the base body is equipped in a partial region of a surface with a plating,
wherein the plating is made of an application material with a greater hardness and/or toughness than the base material, and
wherein the plating is formed by a plurality of plating elements, the plurality of plating elements are applied to the base body tilted in their longitudinal direction in relation to a main flow direction of a hot gas flowing through the base body, and
wherein the plating elements are arranged about the base body in a spiral manner thereby allowing an application of the plating elements to the base material such that stress on the base material is reduced.

11. The gas turbine as claimed in claim 10 , wherein an embodiment of a machine component may be selected from the group consisting of a flame tube of a combustion chamber, a combined housing of a combustion chamber and an inner housing of a combustion chamber.

12. The gas turbine as claimed in claim 10 , wherein a tilt angle is greater than 0° and less than 90°.

13. The gas turbine as claimed in claim 10 , wherein the plating elements are positioned in a segmented configuration.

14. The gas turbine as claimed in claim 10 , wherein the plating elements are applied to the base body by welding.

15. The gas turbine as claimed in claim 14 , wherein the plating elements are applied to the base body by laser powder hardfacing.

16. The gas turbine as claimed in claim 10 , wherein the plating elements are applied to the base body by a spray build up.

17. The gas turbine as claimed in claim 13 , wherein the plating elements are introduced to a flat surface of the base body.

18. The machine component as claimed in claim 8 , wherein the plating elements are applied to the base body by continuous welding.

19. The gas turbine as claimed in claim 10 , wherein each plating element is incorporated into an assigned recess formed in the based body.

Assignees

• Grüger Birgit
• Henschel Elke
• Skoczowski Joachim
• Stapper Martin
• Siemens Ag

Inventors

• Grüger Birgit
• Henschel Elke
• Skoczowski Joachim
• Stapper Martin

Classifications

• F23R2900/03342

  Arrangement of silo-type combustion chambers · CPC title

• F23M2900/05003

  Details of manufacturing specially adapted for combustion chambers · CPC title

• F23M2900/05002

  Means for accommodate thermal expansion of the wall liner · CPC title

• F23M5/02

  characterised by the shape of the bricks or blocks used · CPC title

• C23C24/10

  with intermediate formation of a liquid phase in the layer · CPC title