Method for manufacturing a coating
AssigneeGeneral Electric Technology GmbH
InventorsJohannes Clemens SCHAB, Sophie Betty Claire DUVAL, Piero Daniele GRASSO, Julien Rene Andre ZIMMERMANN
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Abstract
A method for generating coatings is disclosed. The method involves applying a flame spray technique. A metallic powder material is provided to the flame, and the process parameters of the flame spray process are chosen such as to achieve a metallic coating layer with a distinct surface roughness. In a subsequent process phase, a non-metallic material may be disposed on the rough metallic layer by flame spraying. The non-metallic layer effectively interlocks with the roughness of the metallic layer. The method may be carried out with hand-held equipment.
Claims15
A method for manufacturing a coating on a component, the method comprising
- providing an oxidizer fluid flow and a combustion fluid flow to a spray device, combusting the combustion fluid flow with the oxidizer fluid flow, thereby generating a flame emanating from the spray device,
- providing a shielding fluid flow around the flame,
- supplying a supply mass flow of powder material into the flame, thus providing a flow of molten material inside the flame, and
- directing the flame towards a surface of a workpiece, thereby depositing the molten material on the surface and generating a coating, wherein the flow of powder material which is supplied into the flame comprises a metal, thereby generating a metallic coating layer, and setting the process parameters, while a powder material is supplied into the flame which comprises a metal, such as to generate a metallic coating layer with a surface arithmetic mean roughness value Ra equal to or larger than 10 microns.
Dependencies are inferred from the claim text.