Method of making labyrinth seal lips for the moving parts of turbomachines
AssigneeSnecma Moteurs
InventorsGérard Gueldry, Claude Mons
Life of this patent
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Abstract
In order to make labyrinth seal lips on the periphery of a metal moving part of a turbomachine, a thick layer of refractory material that adheres to the metal is made prior to assembling the moving part, the refractory material advantageously comprising at least one metal selected for example from Fe, Co, and Ni, together with at least one ceramic selected for example from borides, nitrides, carbides, and refractory oxides. The labyrinth seal lips that are to be made are machined to their final dimensions in the deposited thick layer.
Claims17
A method of making labyrinth seal lips on the periphery of a metal moving part for a turbomachine, wherein, prior to assembly of the moving part, a thick layer of refractory material that adheres to the metal is formed on the moving part, said refractory material containing at least a metal and a ceramic, and labyrinth seal lips are machined to their final dimensions in the thick layer of refractory material.
A method of making labyrinth seal lips on a rotor of a turbomachine, the method comprising:
- providing a rotor part before an assembly of said rotor;
- depositing a layer of refractory material on a surface of said rotor part, said refractory material comprising at least a metal and a ceramic;
- and
- machining said labyrinth seal lips on said layer of refractory materials prior to said assembly.
Dependencies are inferred from the claim text.