Hybrid component with multiple cores and method for treating a component

Patent metadata

Field	Value
Publication number	US-2018281070-A1
Application number	US-201715472783-A
Country	US
Kind code	A1
Filing date	Mar 29, 2017
Priority date	Mar 29, 2017
Publication date	Oct 4, 2018
Grant date	—

Abstract

A hybrid preform component including a plurality of elongated metallic cores and a coating paste is provided. The coating paste envelops the plurality of elongated metallic cores. The coating paste includes a first material having a first melting point, a second material having a second melting point, and a binder. A method for treating a component is also provided. The method includes the step of mixing a second material, a first material, and a binder to make coating paste. The method further includes the step of coating the plurality of cores using the coating paste to form a coated rod assembly. The method further includes the step of compressing the coated rod assembly to envelop the coating paste to the plurality of cores and form a preform component having a near net shape. The method further includes the step of sintering the preform component to form a pre-sintered preform.

First claim

What is claimed is:

1 . A hybrid preform component, comprising:
a plurality of elongated metallic cores; a coating paste enveloping the plurality of elongated metallic cores, the coating paste comprising a first material having a first melting point, a second material having a second melting point, and a binder, the first melting point being higher than the second melting point, wherein the hybrid preform component has a compressed structure and near net shape.

2 . The hybrid preform component of claim 1 , wherein the coating paste has the first material in an amount, by weight, from about 35% to about 95% and the second material in an amount, by weight, from about 5% to about 65%.

3 . The hybrid preform component of claim 1 has a cross sectional ratio of the plurality of elongated metallic cores to the coating paste from about 40% to about 90%.

4 . The hybrid preform component of claim 1 , wherein the hybrid preform component has a cross-sectional geometry selected from the group consisting of a circle, an ellipse, an oval, a triangle, a rounded triangle, a square, a rounded square, a rectangle, a rounded rectangle, a pentagon, a rounded pentagon, a hexagon, a rounded hexagon, and a combination thereof.

5 . The hybrid preform component of claim 1 , wherein the plurality of elongated metallic cores is selected from the group consisting of a superalloy, a nickel-based superalloy, a cobalt-based superalloy, an iron-based superalloy, a hard-to-weld (HTW) alloy, a refractory alloy, GTD 111, GTD 444, HAYNES 188, INCONEL 738, MAR-M-247, René 108, René 142, René 195, René N2, and a combination thereof.

6 . The hybrid preform component of claim 1 , wherein the plurality of elongated metallic cores has the same diameter.

7 . The hybrid preform component of claim 1 , wherein the plurality of elongated metallic cores has dissimilar diameters.

8 . The hybrid preform component of claim 1 , wherein the plurality of elongated metallic cores is joined together.

9 . The hybrid preform component of claim 1 , wherein the plurality of elongated metallic cores is not joined together.

10 . A method for treating a component, comprising:
mixing a first material having a first melting point, a second material having a second melting point, and a binder to make coating paste, the first melting point being higher than the second melting point; assembling a plurality of cores; coating the plurality of cores using the coating paste to form a coated rod assembly; compressing the coated rod assembly to envelop the coating paste to the plurality of cores and form a preform component having a near net shape; sintering the preform component to form a pre-sintered preform.

11 . The method of claim 10 , wherein the preform component has a cross-sectional geometry selected from the group consisting of a circle, an ellipse, an oval, a triangle, a rounded triangle, a square, a rounded square, a rectangle, a rounded rectangle, a pentagon, a rounded pentagon, a hexagon, a rounded hexagon, and a combination thereof.

12 . The method of claim 10 , further comprising machining the pre-sintered preform to the required length and geometry.

13 . The method of claim 10 , further comprising brazing the pre-sintered preform to the component.

14 . The method of claim 10 , further comprising joining the plurality of cores.

15 . The method of claim 14 , wherein the joining is selected from the group consisting of resistance welding, tungsten inert gas tack welding, brazing, and a combination thereof.

16 . The method of claim 10 , wherein the compressing comprises extruding the coated rod assembly.

17 . The method of claim 10 , wherein the plurality of cores has the same diameter.

18 . The method of claim 10 , wherein the plurality of cores has dissimilar diameters.

19 . The method of claim 10 , wherein the plurality of cores is joined together.

20 . The method of claim 10 , wherein the plurality of cores is not joined together.

Assignees

• Gen Electric

Inventors

• Cui Yan
• Kottilingam Srikanth Chandrudu
• Tollison Brian Lee
• PLETCHER Timothy Neal

Classifications

• B22F1/10

  Metallic powder containing lubricating or binding agents; Metallic powder containing organic material · CPC title

• B22F9/04

  starting from solid material, e.g. by crushing, grinding or milling ({C22C1/1084 takes precedence}; crushing, grinding or milling, in general, see the relevant subclasses, e.g. B02C) · CPC title

• B23K2201/34

  Operations & Transport · mapped topic

• B22F7/008

  characterised by the composition · CPC title

• B22F1/0059

  Operations & Transport · mapped topic