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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9415438 B1

PDFFull Text
Date of Patent:
Aug. 16, 2016

Filed:

Apr. 11, 2014

Method for forming single crystal parts using additive manufacturing and remelt

Applicant:

United Technologies Corporation, Hartford, CT (US);

Inventors:

John McBrien, South Glastonbury, CT (US);

Lea Kennard Castle, Vernon, CT (US);

Brandon W. Spangler, Vernon, CT (US);

Assignee:

United Technologies Corporation, Hartford, CT (US);

Attorney:

Kinney & Lange, P.A.

Primary Examiner:

Kevin E Yoon

Int. Cl.
CPC ...
B22C 7/02 (2006.01); B22D 23/06 (2006.01); F01D 5/28 (2006.01); F01D 5/18 (2006.01); B22F 3/105 (2006.01); B22F 5/04 (2006.01); C30B 11/00 (2006.01); C30B 29/52 (2006.01); B22C 9/04 (2006.01); B22C 9/02 (2006.01); B22C 9/10 (2006.01); B22C 9/22 (2006.01); B23K 15/00 (2006.01); B32B 1/08 (2006.01); B32B 3/08 (2006.01); B32B 3/26 (2006.01); B32B 5/16 (2006.01); B32B 9/00 (2006.01); B33Y 10/00 (2015.01); B33Y 80/00 (2015.01);
U.S. Cl.
CPC ...
B22C 7/02 (2013.01); B22C 9/02 (2013.01); B22C 9/043 (2013.01); B22C 9/10 (2013.01); B22C 9/22 (2013.01); B22D 23/06 (2013.01); B22F 3/1055 (2013.01); B22F 5/04 (2013.01); B23K 15/0006 (2013.01); B23K 26/342 (2015.10); B32B 1/08 (2013.01); B32B 3/08 (2013.01); B32B 3/26 (2013.01); B32B 5/16 (2013.01); B32B 9/005 (2013.01); C30B 11/00 (2013.01); C30B 29/52 (2013.01); F01D 5/18 (2013.01); F01D 5/28 (2013.01); B32B 2250/03 (2013.01); B32B 2264/105 (2013.01); B32B 2603/00 (2013.01); B33Y 10/00 (2014.12); B33Y 80/00 (2014.12); F05D 2230/31 (2013.01); Y02P 10/295 (2015.11);
Abstract

A method of forming a metal single crystal turbine component with internal passageways includes forming a polycrystalline turbine blade with internal passageways by additive manufacturing and filling the passageways with a core ceramic slurry. The ceramic slurry is then treated to harden the core and the turbine component is encased in a ceramic shell which is treated to form a ceramic mold. The turbine component in the mold is then melted and directionally solidified in the form of a single crystal. The outer shell and inner ceramic core are then removed to form a finished single crystal turbine component with internal passageways.

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