Apparatus and method for direct writing of single crystal super alloys and metals

a single crystal super alloy and writing apparatus technology, applied in mechanical apparatus, manufacturing tools, turbines, etc., can solve the problems of expensive ceramic molds, slow and expensive single crystal casting process,

Inactive Publication Date: 2016-09-08
GENERAL ELECTRIC CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, single crystal casting is a slow and expensive process.
Due to high melting temperature of the Nickel superalloy, often expensive ceramic molds are required.

Method used

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  • Apparatus and method for direct writing of single crystal super alloys and metals
  • Apparatus and method for direct writing of single crystal super alloys and metals
  • Apparatus and method for direct writing of single crystal super alloys and metals

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Embodiment Construction

[0016]Reference now will be made in detail to embodiments of the invention, one or more examples of which are illustrated in the drawings. Each example is provided by way of explanation of the invention, not limitation of the invention. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. For instance, features illustrated or described as part of one embodiment can be used with another embodiment to yield a still further embodiment. Thus, it is intended that the present invention covers such modifications and variations as come within the scope of the appended claims and their equivalents.

[0017]Direct Metal Deposition (DMD), a digital additive manufacturing process, uses an intelligent closed-loop feedback system to provide an economical solution for advanced Gas Turbine Technology. Methods and apparatus are generally provided herein for the...

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Abstract

Apparatus and methods for direct writing of single crystal super alloys and metals are provided. In one method, a substrate is heated to a pretermined temperature below its melting point, and a laser is used to form a melt pool on a surface of a substrate. The substrate is positioned on a base plate, and the laser and the base plate are movable relative to each other, with the laser being used for direct metal deposition and the substrate is heated to a temperature below its melting point. A superalloy powder is introduced to the melt pool, and the temperature of the melt pool is controlled to maintain a predetermined thermal gradient on a solid and liquid interface of the melt pool so as to form a single crystal deposit on the substrate.

Description

PRIORITY INFORMATION[0001]The present application claims priority to U.S. Provisional Patent Application Ser. No. 62 / 041,884 titled “Apparatus and Method for Direct Writing of Single Crystal Super Alloys and Metals” of Mazumder, et al. filed on Aug. 26, 2014, which is incorporated by reference herein.FIELD OF THE INVENTION[0002]The present disclosure relates to an apparatus and method for direct writing of single crystal super alloys and metals.BACKGROUND OF THE INVENTION[0003]The turbine section of a gas turbine engine is located downstream of a combustor section and contains a rotor shaft and one or more turbine stages, each having a turbine disk (rotor) mounted or otherwise carried by the shaft and turbine blades mounted to and radially extending from the periphery of the disk. Components within the combustor and turbine sections are often formed of superalloy materials to provide acceptable mechanical properties while at elevated temperatures resulting from the hot combustion ga...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C22F1/10B23K26/00B23K26/08B23K26/144B23K26/342B23K26/70
CPCC22F1/10B23K26/342B23K26/702B23K26/0861B23K26/0884B23K26/144B33Y80/00B23K26/0006B23K2201/001B23K2203/08B33Y10/00B33Y30/00B33Y50/02B23K26/703B23K26/034B23K26/083B23K26/0869B23K26/34B23P15/04B23K26/354B23K2101/001B23K2103/08B23K2103/26B23K26/346
Inventor CARTER, JR., WILLIAM THOMASROCKSTROH, TODD JAYKONITZER, DOUGLAS GERARDMAZUMDER, JYOTIRMOYCHOI, JEONGYONG
Owner GENERAL ELECTRIC CO
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