Indirect surface finishing during hybrid manufacturing

Patent metadata

Field	Value
Publication number	US-10427246-B2
Application number	US-201815901532-A
Country	US
Kind code	B2
Filing date	Feb 21, 2018
Priority date	Feb 21, 2018
Publication date	Oct 1, 2019
Grant date	Oct 1, 2019

Abstract

A hybrid manufacturing method may comprise depositing a secondary material onto a workpiece, finishing the secondary material to form a finished surface on the secondary material, depositing a primary material onto the finished surface, subsequent to depositing the secondary material, wherein a surface of the primary material interfaces the finished surface, and the surface of the primary material is complementary to the finished surface, and removing the secondary material.

First claim

What is claimed is:

1. A hybrid manufacturing method, comprising:
depositing a secondary material onto a workpiece;
finishing the secondary material to form a finished surface on the secondary material;
depositing a primary material onto the finished surface, subsequent to depositing the secondary material, wherein a surface of the primary material interfaces the finished surface, and the surface of the primary material is complementary to the finished surface; and
removing the secondary material from the workpiece.

2. The hybrid manufacturing method of claim 1 , wherein the secondary material is deposited using directed energy deposition (DED).

3. The hybrid manufacturing method of claim 2 , wherein the primary material is deposited using DED.

4. The hybrid manufacturing method of claim 3 , wherein the surface of the primary material is smooth in response to interfacing the finished surface.

5. The hybrid manufacturing method of claim 3 , wherein the primary material is deposited independently from the secondary material.

6. The hybrid manufacturing method of claim 3 , wherein the secondary material is removed by chemical milling.

7. The hybrid manufacturing method of claim 6 , wherein the primary material comprises a higher corrosion resistance than the secondary material.

8. The hybrid manufacturing method of claim 3 , wherein the secondary material is removed by melting the secondary material from the primary material.

9. The hybrid manufacturing method of claim 8 , wherein the primary material comprises a higher melting point temperature than the secondary material.

10. A hybrid manufacturing method, comprising:
depositing, by a machine, a secondary material onto a workpiece using a first head;
finishing, by the machine, the secondary material to form a finished surface on the secondary material using a second head; and
depositing, by the machine, a primary material onto the finished surface, subsequent to depositing the secondary material, wherein a surface of the primary material interfaces the finished surface, and the surface of the primary material is complementary to the finished surface,
wherein the primary material is deposited using the first head; and
removing the secondary material from the workpiece.

11. The hybrid manufacturing method of claim 10 , wherein the secondary material is removed by chemical milling.

12. The hybrid manufacturing method of claim 11 , wherein the primary material comprises a higher corrosion resistance than the secondary material.

13. The hybrid manufacturing method of claim 10 , wherein the secondary material is deposited using directed energy deposition (DED).

14. The hybrid manufacturing method of claim 13 , wherein the primary material is deposited using DED.

15. The hybrid manufacturing method of claim 14 , wherein the surface of the primary material is smooth in response to interfacing the finished surface.

16. The hybrid manufacturing method of claim 14 , wherein the secondary material is removed by melting the secondary material from the primary material.

17. The hybrid manufacturing method of claim 16 , wherein the primary material comprises a higher melting point temperature than the secondary material.

18. A hybrid manufacturing method, comprising:
depositing, using directed energy deposition (DED), a secondary material onto a workpiece;
finishing the secondary material to form a finished surface on the secondary material, wherein a surface roughness of the finished surface is minimized in response to the finishing;
depositing, using DED, a primary material onto the finished surface, wherein a surface roughness of a surface of the primary material that is interfacing the finished surface is similar to that of the finished surface in response to the interfacing; and
removing the secondary material from the primary material.

19. The hybrid manufacturing method of claim 18 , wherein the primary material is a first metal and the secondary material is a second metal.

Assignees

• Hamilton Sundstrand Corp

Inventors

• Madinger Alexander
• Wentland William Louis
• Giulietti Diana

Classifications

• B23P23/04 Primary

  for both machining and other metal-working operations · CPC title

• B23K26/342 Primary

  Build-up welding · CPC title

• H01J37/3435

  Target holders (includes backing plates and endblocks) · CPC title

• B33Y10/00

  Processes of additive manufacturing · CPC title

• B23K9/04

  Welding for other purposes than joining, e.g. built-up welding · CPC title