Method of fabrication for the repair and augmentation of part functionality of metallic components

Patent metadata

Field	Value
Publication number	US-10449624-B2
Application number	US-201615282048-A
Country	US
Kind code	B2
Filing date	Sep 30, 2016
Priority date	Oct 2, 2015
Publication date	Oct 22, 2019
Grant date	Oct 22, 2019

Abstract

Methods and systems for manufacturing a three-dimensional product. Fabrication of a three-dimensional part from a powder spread over a work table as a powder bed can be initiated. The fabrication process can be paused to cool down the work table to room temperature to obtain access to the three-dimensional part for post-processing operations such as, for example, embedding external artifacts. Fabrication can continue by preheating the powder rather than the work table until fabrication of the three-dimensional part is complete. A damaged part may be placed within the powder bed, wherein the fabrication process can be directly initiated to achieve part repair. Additionally, a material of the same part's composition can be used or a different material utilized to render the part better than new. Access to the three-dimensional part allows embedding of a foreign object in the three-dimensional part within the powder bed while the three-dimensional part remains non-finished.

First claim

What is claimed is:

1. A method of manufacturing a three-dimensional product, comprising:
initiating a fabrication of a three-dimensional part from powder spread over a work table as a powder bed;
pausing said fabrication and cooling said work table to room temperature to obtain access to said three-dimensional part; and
continuing fabrication by preheating said powder rather than said work table until fabrication of said three-dimensional part is complete.

2. The method of claim 1 wherein said access to said three-dimensional part allows embedding of a foreign object in said three-dimensional part within said powder bed while said three-dimensional part remains in a non-finished state.

3. The method of claim 1 wherein said access to said three-dimensional part allows for repair of said three-dimensional part.

4. The method of claim 3 , wherein repair of said three-dimensional part comprises pre-processing procedures.

5. The method of claim 4 , wherein the pre-processing procedures comprise at least one of CNC machining or polishing.

6. The method of claim 1 further comprising utilizing varying material options including materials matching a composition of a foreign object or a material of a different composition to assist in rendering a damaged component better than new.

7. The method of claim 1 further comprising:
varying of an intensity of an energy beam from a low intensity; and
applying said energy beam with said varying of said intensity to said powder bed to avoid smoking of said powder.

8. The method of claim 7 further comprising gradually increasing said intensity of said energy beam to avoid powder repelling of said powder during said preheating.

9. The method of claim 7 automatically recording with a controlling computer, a last registration of a position of said energy beam during an initial portion of said fabrication of said three-dimensional part.

10. The method of claim 9 further comprising utilizing a visual feedback system in case said three-dimensional part is removed from said powder bed to resolve any registration issues thereof.

11. The method of claim 10 further comprising storing a prior build position using said visual feedback system and determining a following build position utilizing a reference recorded by said controlling computing during a prior processing step of said fabrication.

12. A system for manufacturing a three-dimensional part, comprising:
a work table, wherein the work table is configured to be preheated prior to a fabrication of a three-dimensional part, and the work table is further configured to be cooled to room temperature while the fabrication is paused to obtain access to the three dimensional part;
an energy beam source that provides an energy beam;
a controlling computer, wherein the controlling computer is configured to automatically record a last registration of a position of the energy beam during an initial portion of the fabrication of the three-dimensional part; and
a visual feedback system, wherein the visual feedback system is configured to resolve any registration issues in case the three-dimensional part is removed from a powder bed.

13. The system of claim 12 wherein the access to the three-dimensional part allows embedding a foreign object in the three-dimensional part within the powder bed while the three-dimensional part remains in a non-finished state.

14. The system of claim 12 wherein the access to the three-dimensional part allows for repair of the three-dimensional part during a post-processing operation.

15. The system of claim 12 wherein an intensity of the energy beam is configured to be varied from a low intensity, and wherein the energy beam is applied with variable intensity to the powder bed to avoid smoking of the powder.

16. The system of claim 15 wherein the intensity of the energy beam is configured to be gradually increased to avoid powder repelling of the powder during the preheating.

17. The system of claim 12 wherein:
a prior build position is storable via the visual feedback system; and
a following build position is determinable utilizing a reference recorded by the controlling computing during a prior processing operation of the fabrication.

Assignees

• Univ Texas

Inventors

• Mireles Jorge
• Hossain Mohammad
• Wicker Ryan

Classifications

• B22F10/64

  by thermal means (control of energy beam parameters for post heating B22F10/364) · CPC title

• B22F10/362

  for preheating · CPC title

• B22F10/28

  Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM] · CPC title

• B33Y50/02

  for controlling or regulating additive manufacturing processes · CPC title

• B22F2007/068

  repairing articles · CPC title