Coating/repairing process using electrospark with psp rod

a technology of electrospark and electrospark, which is applied in the direction of stators, machines/engines, mechanical apparatuses, etc., can solve the problems of reducing the efficiency of a jet turbine, affecting certain desired characteristics of the substrate-containing component, and creating surface imperfections on die-cast parts

Inactive Publication Date: 2014-01-16
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Relatively rough coating or weld materials on the surfaces of substrates can negatively affect certain desired characteristics of the substrate-containing component.
In one example, rough welds in dies can create surface imperfections on die cast parts.
In another example, rough coatings on turbine components can decrease the efficiency of a jet turbine.

Method used

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  • Coating/repairing process using electrospark with psp rod
  • Coating/repairing process using electrospark with psp rod
  • Coating/repairing process using electrospark with psp rod

Examples

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Embodiment Construction

[0014]Example embodiments that incorporate one or more aspects of the invention are described and illustrated in the drawings. These illustrated examples are not intended to be a limitation on the invention. For example, one or more aspects of the invention can be utilized in other embodiments and even other types of devices. Moreover, certain terminology is used herein for convenience only and is not to be taken as a limitation on the invention. Still further, in the drawings, the same reference numerals are employed for designating the same elements.

[0015]Coating and repairing operations utilizing ESD can be beneficial when compared to other metal deposition processes used in die manufacturing or turbine component repair. The ESD process tends to minimize the heat affected zone (HAZ) of the substrate. The HAZ can be defined as a volume of the substrate where the microstructure and properties of the substrate have been altered by the ESD process. Minimizing the HAZ can be beneficia...

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Abstract

An electrospark deposition electrode and an associated method for depositing coatings using the electrode are provided. The electrode includes a powder of a first metal and a powder of a second metal. The second metal is a braze alloy including nickel, the second metal having a lower melting point than the first metal. The powder of the first metal and the powder of the second metal are sintered together to form the electrode so that the powders are comingled but not combined within the electrode. The method includes depositing a layer of the first metal onto the substrate using an electrospark deposition process.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The invention relates to electrospark deposition, and specifically relates to electrospark deposition using a sintered electrode containing powders of a superalloy and a braze alloy.[0003]2. Discussion of Prior Art[0004]Electrospark deposition (ESD) is a technique that can be used to deposit a metal-containing alloy from an electrode onto a substrate. ESD is used in a number of operations such as repairing, coating, welding, and micro-welding metal-containing substrates. Example uses of ESD include, but are not limited to, coating or repair operations in die manufacturing and turbine component repair.[0005]Relatively rough coating or weld materials on the surfaces of substrates can negatively affect certain desired characteristics of the substrate-containing component. In one example, rough welds in dies can create surface imperfections on die cast parts. In another example, rough coatings on turbine components can decr...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C23C4/06B22F1/00
CPCC23C26/00B23P6/007F01D5/005F05D2230/31C23C26/02B23P6/002B23P6/045F01D5/288F01D9/02F05D2220/32F05D2300/177F05D2300/516
Inventor LIN, DECHAOBUCCI, DAVID VINCENTKOTTILINGAM, SRIKANTH CHANDRUDUCUI, YANTOLLISON, BRIAN IEESCHICK, DAVID EDWARD
Owner GENERAL ELECTRIC CO
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