Metallic 3D printing detachment technique

Patent metadata

Field	Value
Publication number	US-9987683-B2
Application number	US-201514751758-A
Country	US
Kind code	B2
Filing date	Jun 26, 2015
Priority date	Jun 26, 2015
Publication date	Jun 5, 2018
Grant date	Jun 5, 2018

Abstract

A method for metallic three-dimensional (3D) printing of a part is disclosed. The method may include selecting a material for a build plate adapted to form an intermetallic phase with the part at an interface between the build plate and the part, and forming the intermetallic phase with the part at the interface.

First claim

What is claimed is:

1. A method for metallic three-dimensional (3D) printing of a part, comprising:
selecting a material for a build plate adapted to form an intermetallic phase with the part at an interface between the build plate and the part;
forming the intermetallic phase with the part at the interface; and
calibrating a laser power of a 3D printer according to predetermined conditions for forming the intermetallic phase.

2. The method of claim 1 , further comprising spreading a first layer of a powdered material over the build plate, the powdered material being dissimilar from the material of the build plate.

3. The method of claim 2 , further comprising heating selective portions of the first layer of the powdered material to form a first layer of the part and the intermetallic phase between the part and the build plate.

4. The method of claim 3 , further comprising spreading a plurality of layers of the powdered material on the first layer of the part, and selectively heating selective portions of each of the plurality layers to form subsequent layers of the part.

5. The method of claim 4 , further comprising manually applying a force on the part to remove the part from the build plate.

6. The method of claim 4 , further comprising using aluminum (Al) as the material of the build plate.

7. The method of claim 6 , further comprising using one of nickel (Ni), iron (Fe), or titanium (Ti) as the powdered material to form the part.

8. A method for detaching a part from a build plate, comprising:
using a build plate composed of a material that creates an intermetallic phase at an interface between the build plate and the part when the part is formed on the build plate via metallic three-dimensional (3D) printing; and
removing the part from the build plate at the interface.

9. The method of claim 8 , further comprising calibrating a laser power of a 3D printer according to predetermined conditions for forming the intermetallic phase.

10. The method of claim 8 , further comprising selecting aluminum (Al) as the material of the build plate.

11. The method of claim 10 , further comprising selecting one of nickel (Ni), iron (Fe), or titanium (Ti) as a material of the part.

12. The method of claim 8 , wherein the part is removed from the build plate by manually applying a force on the part after the part is formed on the build plate via metallic 3D printing.

13. The method of claim 12 , further comprising using a hand tool to apply the force on the part to remove the part from the build plate.

14. The method of claim 12 , further comprising applying approximately ten newtons per square millimeter (10 N/mm2) on the part to remove the part from the build plate.

Assignees

• Caterpillar Inc

Inventors

• Marchione Thierry

Classifications

• B29C64/153 Primary

  using layers of powder being selectively joined, e.g. by selective laser sintering or melting · CPC title

• B22F12/63

  Rollers · CPC title

• B22F10/40

  Structures for supporting workpieces or articles during manufacture and removed afterwards · CPC title

• B22F10/31

  Calibration of process steps or apparatus settings, e.g. before or during manufacturing · CPC title

• B22F10/28

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