Additive manufacturing using a momentum transfer method

Patent metadata

Field	Value
Publication number	US-12157168-B2
Application number	US-202017434580-A
Country	US
Kind code	B2
Filing date	Feb 27, 2020
Priority date	Feb 27, 2019
Publication date	Dec 3, 2024
Grant date	Dec 3, 2024

Abstract

A metallic product is produced by an additive manufacturing method. A device for practicing has a controller with a stored instruction set for implementing the manufacturing of the metallic product. The metallic product is manufactured in a piece-wise or layer-wise manner on a target platform by a print head that is in two-way communication with the controller. The print head operates on a momentum transfer technique in which pulsed energy from an impulse source is used to launch pieces of metal toward the target platform, the pieces of metal bonding at the target platform to manufacture the metallic product.

First claim

What is claimed is:

1. A device for additive manufacturing of a metallic product, comprising a controller having an instruction set for implementing the manufacturing of the metallic product stored therein; a target platform on which the metallic product is manufactured in a piece-wise or layer-wise manner; and a print head that is in two-way communication with the controller, such that:
the print head receives pulsed energy from an impulse source to launch pieces of metal toward the target platform using a momentum transfer technique, such that the pieces of metal bond at the target platform to manufacture the metallic product;
wherein the momentum transfer technique is a laser impact welding; and
wherein the print head comprises a backing plate with an aperture of a predetermined area and shape and a web of a flyer metal having a predetermined thickness and composition, wherein the web of the flyer metal is positioned between the backing plate and the impulse source, such that the pulsed energy accelerates a piece of the flyer metal through the aperture, launching the piece of the flyer metal toward the target platform.

2. The device of claim 1 , wherein the instruction set implements a three-dimensional model of the metallic product by sequentially launching pieces of the flyer metal having a predetermined mass toward a predetermined position of the target platform, using pulsed energy of a predetermined amount from the impulse source.

3. The device of claim 2 , wherein the metallic product is a body built of the flyer metal on the target platform.

4. The device of claim 2 , wherein the flyer metal pieces fill cracks or crevices in a preexisting metallic body to produce the metallic product.

5. The device of claim 2 , wherein the flyer metal pieces add features to a preexisting metallic body to produce the metallic product.

6. The device of claim 2 , wherein the flyer metal pieces create a homogeneous weld or a heterogeneous weld of two or more preexisting pieces.

7. The device of claim 2 , wherein the flyer metal pieces provide a surface coating to a preexisting metal body.

Assignees

• Ohio State Innovation Foundation

Inventors

• Daehn Glenn
• Vivek Anupam

Classifications

• B23K26/356

  by shock processing · CPC title

• B23K26/34

  Laser welding for purposes other than joining · CPC title

• B22F10/25

  Direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS] · CPC title

• B33Y10/00 Primary

  Processes of additive manufacturing · CPC title

• B22F12/43

  pulsed; frequency modulated · CPC title