Methods of forming three-dimensional objects using additive metal manufacturing

Patent metadata

Field	Value
Publication number	US-2019388966-A1
Application number	US-201916445863-A
Country	US
Kind code	A1
Filing date	Jun 19, 2019
Priority date	Jun 21, 2018
Publication date	Dec 26, 2019
Grant date	—

Abstract

An additive manufacturing method including depositing a first amount of metal powder on a print bed, the first amount metal powder forming a first layer, depositing a first binder component to the first layer in a first region, and depositing a second binder component to the first layer in a second region.

First claim

What is claimed is:

1 . An additive manufacturing method, the method comprising:
depositing a first amount of metal powder onto a print bed, the first amount of metal powder forming a first layer; depositing a first binder component onto the first layer in a first region; and depositing a second binder component onto the first layer in a second region.

2 . The method according to claim 1 , wherein a thermal stability of the first binder component is less than a thermal stability of the second binder component.

3 . The method according to claim 2 , wherein the first region completely surrounds the second region in a plane.

4 . The method according to claim 1 , wherein the first region and the second region do not overlap.

5 . The method according to claim 1 , wherein an outer edge of the first region is defined by a perimeter of the first layer.

6 . The method according to claim 5 , wherein the first region extends from the outer edge toward a center region of the first layer by a distance of approximately 0.2 mm to approximately 5 mm.

7 . The method according to claim 1 , wherein the second binder component crosslinks with the first binder component along an overlap between the first region and the second region.

8 . The method according to claim 1 , further comprising:
depositing a second amount of metal powder, depositing the first binder component, and depositing the second binder component to form a three-dimensional (3D) object.

9 . The method according to claim 1 , further comprising:
activating one of the first component or the second component, wherein activating one of the first component or the second component includes changing a physical characteristic of the one of the first component or the second component.

10 . The method according to claim 9 , wherein activating one of the first component or the second component includes depositing an additional material on the first component or the second component.

11 . A method of additive manufacturing, the method comprising:
forming a plurality of layers of a powder on a print bed layer by layer; depositing a first binder component onto at least one layer of the plurality of layers in a first region; and depositing a second binder component onto the at least one layer of the plurality of layers in a second region.

12 . The method according to claim 11 , wherein the first region and the second region do not overlap.

13 . The method according to claim 11 , further comprising:
depositing one of the first binder component or the second binder component on an additional layer of the plurality of layers, and wherein another of the first binder component or the second binder component is not deposited on the additional layer of the plurality of layers.

14 . The method according to claim 11 , wherein the first region completely surrounds the second region in a plane.

15 . The method according to claim 14 , wherein the first binder component does not form crosslinking bonds, and wherein the second binder forms crosslinking bonds.

16 . An additive manufacturing method, the method comprising:
depositing a first amount of metal powder on a print bed, the first amount metal powder forming a first layer; depositing a first binder component onto the first layer in a first region, wherein the first binder component is applied in a first concentration; and depositing a second binder component onto the first layer in a second region, wherein the second binder component is applied in a second concentration different from the first concentration.

17 . The system according to claim 16 , wherein a thermal stability of the first binder component is less than a thermal stability of the second binder component.

18 . The system according to claim 16 , wherein the first region and the second region do not overlap.

19 . The system according to claim 16 , wherein an outer edge of the first region is defined by a perimeter of the first layer.

20 . The system according to claim 19 , wherein the first region extends from the outer edge toward a center region of the first layer by a distance of approximately 1 mm to approximately 5 mm.

Assignees

• Desktop Metal Inc

Inventors

• Gibson Michael Andrew
• Martin Charles Edward
• Kernan Brian Daniel
• Shydo Jr Robert Michael

Classifications

• B29C64/165 Primary

  using a combination of solid and fluid materials, e.g. a powder selectively bound by a liquid binder, catalyst, inhibitor or energy absorber · CPC title

• B33Y70/00 Primary

  Materials specially adapted for additive manufacturing · CPC title

• B33Y10/00

  Processes of additive manufacturing · CPC title

• B33Y30/00

  Apparatus for additive manufacturing; Details thereof or accessories therefor · CPC title

• B29C64/393

  for controlling or regulating additive manufacturing processes · CPC title