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US 9,956,637 B2Granted
Electrospark deposition system for repair of gas turbine
AssigneeGeneral Electric Company
InventorsDechao Lin, John Gregory Obeirne, David Vincent Bucci, Srikanth Chandrudu Kottilingam, Yan Cui
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Abstract
A system and method for repairing a metal substrate includes an electrospark device and an electrode removably supported in the electrode holder. The electrospark device applies a coating of a material when placed into contact with the metal substrate. A cooling device to lowers the temperature of shielding gas flow below an ambient temperature. A conduit is arranged to direct a flow of the shielding gas to the interface of the electrode and the substrate to cool the area of the substrate receiving the coating.
Claims20
A system for repairing a metal substrate comprising:
- an electrospark device including an electrode holder and a consumable electrode removably supported in the electrode holder, the electrospark device being arranged and disposed to establish a continuous spark between the consumable electrode and the metal substrate and continuously deposit an alloyed coating until a desired coating thickness is obtained;
- a cooling device configured to lower the temperature of a shielding gas flow below an ambient temperature;
- and
- a conduit isolated from the electrospark device, disposed adjacent to an interface of the consumable electrode and the metal substrate, and oriented toward the interface of the consumable electrode and the metal substrate,
- wherein the conduit is arranged and disposed to receive the shielding gas flow from the cooling device and direct the shielding gas flow to the interface of the consumable electrode and the metal substrate, the conduit being further arranged and disposed to deliver the shielding gas flow independent of the electrospark device.
2 more elements
A system for repairing a metal substrate comprising:
- an electrospark device including a rotatable electrode holder and a consumable electrode removably supported in the rotatable electrode holder, the electrospark device being arranged and disposed to establish a continuous spark between the consumable electrode and the metal substrate and continuously deposit an alloyed coating until a desired coating thickness is obtained;
- a cooling device configured to lower the temperature of a shielding gas flow below an ambient temperature;
- and
- a conduit isolated from the electrospark device, disposed adjacent to an interface of the consumable electrode and the metal substrate, and oriented toward the interface of the consumable electrode and the metal substrate,
- wherein the conduit is arranged and disposed to receive the shielding gas flow from the cooling device and direct the shielding gas flow to the interface of the consumable electrode and the metal substrate, the conduit being further arranged and disposed to deliver the shielding gas flow independent of the electrospark device, and
- wherein the interface is located at a point of contact of the consumable electrode with the metal substrate where the continuous spark is established.
3 more elements
A system for repairing a metal substrate comprising:
- an electrospark device including a rotatable electrode holder and a consumable electrode removably supported in the rotatable electrode holder, the electrospark device being arranged and disposed to establish a continuous spark between the consumable electrode and the metal substrate and continuously deposit an alloyed coating until a desired coating thickness is obtained;
- a cooling device configured to lower the temperature of a shielding gas flow below an ambient temperature;
- and
- a conduit isolated from the electrospark device, disposed adjacent to an interface of the consumable electrode and the metal substrate, and oriented toward the interface of the consumable electrode and the metal substrate,
- wherein the conduit is arranged and disposed to receive the shielding gas flow from the cooling device and direct the shielding gas flow to the interface of the consumable electrode and the metal substrate, the conduit being further arranged and disposed to deliver the shielding gas flow independent of the electrospark device, and
- wherein the consumable electrode and the metal substrate are cooled by the shielding gas passing through the conduit.
3 more elements
Dependencies are inferred from the claim text.