Manufacturing process for hard facing aluminum injection molds

Patent metadata

Field	Value
Publication number	US-9796044-B2
Application number	US-201414467756-A
Country	US
Kind code	B2
Filing date	Aug 25, 2014
Priority date	Aug 25, 2014
Publication date	Oct 24, 2017
Grant date	Oct 24, 2017

Abstract

A number of variations may include a product that may include a substrate that may include an aluminum-nickel alloy and at least one surface and a coating that may include a metallic material deposited over the at least one surface via laser cladding.

First claim

What may be claimed is:

1. A method comprising:
providing a substrate comprising an aluminum-nickel alloy and a first surface;
machining the first surface to define a cavity;
processing the cavity to remove oxidation of the aluminum-nickel alloy;
cladding the substrate with a coating via laser hard facing the substrate wherein the laser hard facing comprises:
providing a metallic material onto the first surface;
providing a laser and applying the focal point of a laser beam on the metallic material;
tracking the laser beam across the metallic material on the first surface of the substrate such that the resulting coating and dilution layer cover the entire first surface prior to flowing a shielding gas around the laser beam;
melting the metallic material via the laser beam such that a melt pool, the coating, and dilution layer are formed on the first surface;
machining the coating; and
polishing the coating.

2. A method as set forth in claim 1 , wherein providing a metallic material onto the first surface comprises flowing the metallic material onto the first surface via a metallic material wire feed.

3. A method as set forth in claim 1 , wherein providing a metallic material onto the first surface comprises flowing the metallic material onto the first surface via a metallic material powder feed.

4. A method as set forth in claim 1 , wherein providing a metallic material onto the first surface comprises providing a metallic material layer onto the first surface.

5. A method as set forth in claim 1 , wherein the substrate comprises a cast aluminum-nickel alloy.

6. A method as set forth in claim 1 , wherein the substrate is an injection molding die.

7. A method as set forth in claim 1 , wherein the substrate is a die.

8. A method comprising:
providing a substrate comprising an aluminum-nickel alloy and a first surface;
machining the first surface to define a cavity;
processing the cavity to remove oxidation of the aluminum-nickel alloy;
cladding the substrate with a coating via laser hard facing the substrate wherein the laser hard facing comprises:
providing a metallic material comprising titanium carbide onto the first surface;
providing a laser and applying the focal point of a laser beam on the metallic material;
flowing a shielding gas around the laser beam;
tracking the laser beam across the metallic material on the first surface of the substrate such that the resulting coating and dilution layer cover the entire first surface prior to flowing a shielding gas around the laser beam;
melting the metallic material via the laser beam such that a melt pool, the coating, and dilution layer are formed on the first surface;
machining the coating; and
polishing the coating.

9. A method as set forth in claim 8 , wherein providing a metallic material onto the first surface comprises flowing the metallic material onto the first surface via a metallic material wire feed.

10. A method as set forth in claim 8 , wherein providing a metallic material onto the first surface comprises flowing the metallic material onto the first surface via a metallic material powder feed.

11. A method as set forth in claim 8 , wherein providing a metallic material onto the first surface comprises providing a metallic material layer onto the first surface.

12. A method as set forth in claim 8 , wherein the substrate comprises a cast aluminum-nickel alloy.

13. A method as set forth in claim 8 , wherein the substrate is an injection molding die.

14. A method as set forth in claim 8 , wherein the substrate is a die.

15. A method comprising:
providing a substrate comprising an aluminum-nickel alloy and a first surface;
machining the first surface to define a cavity;
processing the cavity to remove oxidation of the aluminum-nickel alloy;
cladding the substrate with a coating via laser hard facing the substrate wherein the laser hard facing comprises:
providing a metallic powder material comprising titanium carbide onto the first surface by flowing the metallic material onto the first surface via a metallic powder material feed;
providing a laser and applying the focal point of a laser beam on the metallic powder material;
flowing a shielding gas around the laser beam;
tracking the laser beam across the metallic powder material on the first surface of the substrate such that the resulting coating and dilution layer cover the entire first surface prior to flowing a shielding gas around the laser beam;
melting the metallic powder material via the laser beam such that a melt pool, the coating, and dilution layer are formed on the first surface;
machining the coating; and
polishing the coating.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Mourou Julien P
• Osbourn James E
• Parent Brian J

Classifications

• B23P15/007

  injection moulding tools · CPC title

• B23K26/34

  Laser welding for purposes other than joining · CPC title

• B23K26/14 Primary

  using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor (B23K26/12 takes precedence) · CPC title

• B23K26/0093 Primary

  combined with mechanical machining or metal-working covered by other subclasses than B23K · CPC title

• C23C24/103 Primary

  Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides · CPC title