Core pattern reformer tool

Patent metadata

Field	Value
Publication number	US-10974313-B2
Application number	US-201916413030-A
Country	US
Kind code	B2
Filing date	May 15, 2019
Priority date	May 15, 2019
Publication date	Apr 13, 2021
Grant date	Apr 13, 2021

Abstract

A core pattern reformer system for adjusting and setting a core pattern for use in casting a gas turbine blade has a first portion having a first internal face with a concave portion. The first portion is coupled to a second portion. The second portion has a second internal face with a convex portion. A plurality of adjustable pins is positioned along the internal faces of the first portion and the second portion. The pins have a height that is adjustable with respect to the internal faces. A locking mechanism is included for securing the first portion to the second portion. The system includes one or more air inlets and one or more air exits and a source of cooling air coupled to the one or more air inlets.

First claim

Having thus described the disclosure, what is claimed is:

1. A reforming tool for a core pattern comprising:
a first portion having a first internal face with a concave portion;
a second portion having a second internal face with a convex portion;
a plurality of adjustable pins extending away from the first and second internal faces, the pins having a height that is adjustable with respect to the first and second internal faces;
a locking mechanism for securing the first portion to the second portion;
one or more air inlets; and,
one or more air exits;
wherein the core pattern is supported and repositioned within the reforming tool by the plurality of adjustable pins and is cooled by air passing through the reforming tool.

2. The reforming tool of claim 1 further comprising a vortex air chiller coupled to the one or more air inlets.

3. The reforming tool of claim 1 , wherein a set screw is used to adjust a position of the pin.

4. The reforming tool of claim 3 , wherein the set screw is accessed through a side panel of the first portion and the second portion.

5. The reforming tool of claim 1 , wherein the pins are adjustable to be flush with the first and second internal faces.

6. The reforming tool of claim 1 , wherein the first portion is hinged to the second portion.

7. The reforming tool of claim 1 , wherein a surface of the adjustable pins in contact with the core pattern are contoured similar to a contour of the core pattern.

8. A system for adjusting and setting a core pattern for use in casting a gas turbine blade, the system comprising:
a first portion having a first internal face with a concave portion, the first portion coupled to a second portion, the second portion having a second internal face with a convex portion;
a plurality of adjustable pins positioned along the internal faces of the first portion and the second portion, the pins having a height that is adjustable with respect to the internal faces;
a locking mechanism for securing the first portion to the second portion;
one or more air inlets and one or more air exits; and,
a source of cooling air coupled to the one or more air inlets.

9. The system of claim 8 , wherein the plurality of adjustable pins has a top surface contoured similar to the first internal face or the second internal face.

10. The system of claim 8 , wherein the source of cooling air is a vortex air chiller.

11. The system of claim 8 further comprising a cover plate positioned over an outer surface of first portion and the second portion.

12. The system of claim 8 , wherein the adjustable pins are moved via a plurality of set screws accessible through one or more sides of the first portion and the second portion.

13. A reforming tool for a core pattern comprising:
a first portion having a first internal face with a concave portion;
a second portion having a second internal face with a convex portion;
a first plurality of adjustable pins extending within the first portion, the first plurality of adjustable pins having a height that is adjustable with respect to the first internal face;
a second plurality of adjustable pins extending within the second portion, the second plurality of adjustable pins having a height that is adjustable with respect to the second internal face;
a locking mechanism for securing the first portion to the second portion;
one or more air inlets; and,
one or more air exits;
wherein:
the core pattern is supported and repositioned within the reforming tool by both the first plurality of adjustable pins and the second plurality of adjustable pins; and
the core pattern is cooled by air passing through the reforming tool.

14. The reforming tool of claim 13 further comprising a vortex air chiller coupled to the one or more air inlets.

15. The reforming tool of claim 13 , wherein a set screw is used to adjust a position of at least one of the first plurality of pins.

16. The reforming tool of claim 15 , wherein the set screw is accessed through a side panel of the first portion and the second portion.

17. The reforming tool of claim 13 , wherein the first plurality of pins is adjustable to be flush with the first internal face and the second plurality of pins is adjustable to be flush with the second internal face.

18. The reforming tool of claim 13 , wherein the first portion is hinged to the second portion.

19. The reforming tool of claim 13 , wherein a surface of at least one of the first plurality of adjustable pins and the second plurality of adjustable pins in contact with the core pattern is contoured similar to a contour of the core pattern.

20. The system of claim 13 further comprising a cover plate positioned over an outer surface of the first portion and the second portion.

Assignees

• Chromalloy Gas Turbine Llc

Inventors

• Dodds Gerald Clement
• Molkentin Thomas John

Classifications

• B22C13/12

  for cores · CPC title

• B22C9/10

  Cores; Manufacture or installation of cores {(breaker cores B22C9/084)} · CPC title

• B22C7/06

  Core boxes · CPC title

• B22C9/101

  Permanent cores · CPC title

• B22C9/12

  Treating moulds or cores, e.g. drying, hardening · CPC title