IP Library Granted Patent US 12,269,087
Granted Patent B2
US 12,269,087 · App. 18/777,092 · Granted Apr 8, 2025

Systems and methods of bonding wax

Inventors: James Whitton (East Burke, VT); Zachary Oras (Riverview, FL); Zachary Hopkins (San Diego, CA)
Assignee: Chromalloy Gas Turbine LLC
B22C7/02
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Quick Facts
Patent No.
US 12,269,087
App. No.
18/777,092
Granted
Apr 8, 2025
Kind
B2
Abstract

Lost wax casting bonding methods and systems. A method for bonding a wax component in a feeder system for a lost wax casting process comprises embedding conductive nano-particles in wax to form a sacrificial susceptor. The method includes coupling the wax component to another component such that the sacrificial susceptor is at an interface of the wax component and the other component. The method comprises inductively heating the sacrificial susceptor to cause the wax of the sacrificial susceptor and at least a portion of wax of the wax component to melt to thereby form a bond between the wax component and the other component.

Claims (30)

1. A method for bonding a wax component in a feeder system, the method comprising:

embedding nano-particles in wax to form a sacrificial susceptor;

coupling the wax component to another component such that the sacrificial susceptor is at an interface of the wax component and the other component; and

heating the sacrificial susceptor to cause the wax of the sacrificial susceptor and at least a portion of wax of the wax component to melt to form a bond between the wax component and the other component.

2. The method of claim 1 , wherein the heating includes one of inductive heating or using microwaves.

3. The method of claim 2 , wherein the interface is a tapered depression, further including rotating the wax component within the tapered depression.

4. The method of claim 1 , wherein the heating includes inductively heating the sacrificial susceptor using a robotic system.

5. The method of claim 4 , wherein the robotic system includes a 2-axis positioner.

6. The method of claim 1 , wherein the wax component is a runner.

7. The method of claim 1 , wherein the wax component is a support.

8. The method of claim 1 , wherein the sacrificial susceptor includes magnetite.

9. The method of claim 8 , wherein particles of the magnetite include a spherical shape.

10. The method of claim 9 , wherein the other component is part of the feeder system.

11. A method for bonding a wax component in a feeder system for a lost wax casting process, comprising:

embedding conductive particles in wax to form a sacrificial susceptor;

coupling the wax component to another component such that the sacrificial susceptor is at an interface of the wax component and the other component; and

heating the sacrificial susceptor to cause the wax of the sacrificial susceptor and at least a portion of wax of the wax component to melt to form a bond between the wax component and the other component.

12. The method of claim 11 , wherein the heating includes inductive heating or using microwaves.

13. The method of claim 12 , further including locating the sacrificial susceptor in a depression integral with the other component.

14. The method of claim 12 , further including locating the sacrificial susceptor in a depression, the depression being integral with the wax component.

15. The method of claim 11 , wherein loading of the sacrificial susceptor is about 8% loading.

16. The method of claim 11 , wherein the embedding includes a blending process.

17. A wax casting system for bonding a wax component in a feeder system, the wax casting system comprising:

a plurality of sacrificial susceptors each including nano-particles embedded in wax;

a plurality of runners and supports, each of the plurality of runners and supports coupled to the feeder system; and

an inductive heating system;

wherein, each of the plurality of runners and supports corresponds to and is associated with at least one of the plurality of sacrificial susceptors.

18. The wax casting system of claim 17 , further including a plurality of wax blades.

19. The wax casting system of claim 18 , wherein the feeder system includes a feeding cup and a base plate.

20. The wax casting system of claim 19 , wherein at least a portion of the nano-particles are conductive nano-particles and at least one of the plurality of sacrificial susceptors includes magnetite.

Assignments (2)
SECURITY INTEREST Recorded Jul 20, 2026
From: CHROMALLOY GAS TURBINE LLC
To: ROYAL BANK OF CANADA, AS COLLATERAL AGENT
Reel/Frame 075323/0251 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 18, 2024
From: HOPKINS, ZACHARY; WHITTON, JAMES; ORAS, ZACHARY
To: CHROMALLOY GAS TURBINE LLC
Reel/Frame 068027/0136 →
Continuity (3)
Continuation 18041759
Provisional Application 63260524 · Aug 24, 2021
Related Publication 20240367220A1 · Nov 7, 2024
References Cited (12)
US 7448434B2 · Turkington et al. · 2008 [cited by applicant]
US 8082972B1 · Phipps · 2011 [cited by applicant]
US 20040167270A1 · Chang et al. · 2004 [cited by applicant]
US 20080216984A1 · Bolton · 2008 [cited by applicant]
US 20160288201A1 · Bullied et al. · 2016 [cited by applicant]
US 20180272452A1 · Clark et al. · 2018 [cited by applicant]
US 20200101526A1 · Niane et al. · 2020 [cited by applicant]
US 20240189887A1 · Whitton et al. · 2024 [cited by applicant]
WO 2019122797A1 · 2019 [cited by applicant]
Extended European Search Report, dated Nov. 29, 2023, received in European Patent Application No. 22854457.3, 7 pages. [cited by applicant]
International Search Report and Written Opinion, dated Nov. 15, 2022, 7 pages, issued in International Application No. PCT/US2022/075422. [cited by applicant]
Prasad Ram: “Progress in Investment Castings”, Science and Technology of Casting Processes, Malur Srinivasan, Sep. 26, 2012, XP055904957, DOI: 10.5772/50550. [cited by applicant]