Hybrid component with multiple cores and method for treating a component

Patent metadata

Field	Value
Publication number	US-10675686-B2
Application number	US-201715472783-A
Country	US
Kind code	B2
Filing date	Mar 29, 2017
Priority date	Mar 29, 2017
Publication date	Jun 9, 2020
Grant date	Jun 9, 2020

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, and
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, and
wherein the hybrid preform component is a pre-sintered preform.

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; an ahoy including a composition by weight of about 14% chromium, about 9.5% cobalt, about 3.8% tungsten, about 4.9% titanium, about 3% aluminum, about 0.1% iron, about 2.8% tantalum, about .6% molybdenum, about 0.1% carbon, and a balance of nickel; an alloy including a composition by weight of about 7.5% cobalt, about 0.2% iron, about 9.75% chromium, about 4.2% aluminum, about 3.5% titanium, about 4.8% tantalum, about 6% tungsten, about 1.5% molybdenum, about 0.5% niobium, about 0.2% silicon, about 0.15; % hafnium, and a balance of nickel; an alloy including a composition by weight of about 22% chromium, about 22% nickel, about 0.1% carbon, about 3% iron, about 1.25% manganese, about 0.35% silicon, about 14% tungsten, about 0.03% lanthanum, and a balance of cobalt; an alloy including a composition by weight of about 0.17% carbon, about 16% chromium, about 8.5% cobalt, about 1.75% molybdenum, about 2.6% tungsten, about 3.4% titanium, about 3.4% aluminum, about 0.1% zirconium, about 2% niobium, and a balance of nickel; an alloy including a composition by weight of about 5.5% aluminum, about 0.15% carbon, about 8.25% chromium, about 10% cobalt, about 10% tungsten, about 0.7% molybdenum, about 0.5% iron, about 1% titanium, about 3% tantalum, about 1.5% hafnium, and a balance of nickel; an alloy including a composition by weight of about 8.4% chromium, about 9.5% cobalt, about 5.5% aluminum, about 0.7% titanium, about 9.5% tungsten, about 0.5% molybdenum, about 3% tantalum, about 1.5% hafnium, and a balance of nickel; an alloy including a composition by weight of about 6.8% chromium, about 12% cobalt, about 6.1% aluminum, about 4.9% tungsten, about 1.5; % molybdenum, about 2.8% rhenium, about 6.4% tantalum, about 1.5% hafnium, and a balance of nickel; an alloy including a composition by weight of about 7.6% chromium, about 3.1% cobalt, about 7.8% aluminum, about 5.5% tantalum, about 0.1% molybdenum, about 3.9% tungsten, about 1.7% rhenium, about 0.15% hafnium, and a balance of nickel; an alloy including a composition by weight of about 7.5% cobalt, about 13% chromium, about 6.6% aluminum, about 5% tantalum, about 3.8% tungsten, about 1.6% rhenium, about 0.15% hafnium, and a balance of nickel; and a combination thereof.

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

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

8. The hybrid preform component of claim 1 , wherein the plurality of elongated metallic cores are joined together independent of the coating paste.

9. The hybrid preform component of claim 1 , wherein the plurality of elongated metallic cores are not joined together independent of the coating paste.

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 have the same diameter.

18. The method of claim 10 , wherein the plurality of cores have unequal diameters.

19. The method of claim 10 , wherein the plurality of cores are joined together prior to the coating of the plurality of cores using the coating paste.

20. The method of claim 10 , wherein the plurality of cores are not joined together prior to the coating of the plurality of cores using the coating paste.

Assignees

• Gen Electric

Inventors

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

Classifications

• B22F7/062

  involving the connection or repairing of preformed parts · CPC title

• C22C19/055

  with the maximum Cr content being at least 20% but less than 30% · CPC title

• B23K35/025

  Pastes, creams or slurries · CPC title

• B23K35/0277

  of non-circular cross-section · CPC title

• C22C19/07

  based on cobalt · CPC title