logo

For the Inventor, By the Inventor

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 10265764 B1

PDFFull Text
Date of Patent:
Apr. 23, 2019

Filed:

Dec. 19, 2016

Casting method and cast article

Applicant:

General Electric Company, Schenectady, NY (US);

Inventors:

Jian Zheng, Simpsonville, SC (US);

Arthur S. Peck, Greenville, SC (US);

Assignee:

GENERAL ELECTRIC COMPANY, Schenectady, NY (US);

Attorney:

McNees Wallace & Nurick LLC

Primary Examiner:

Keith Walker

Assistant Examiner:

John A Hevey

Int. Cl.
CPC ...
F01D 5/14 (2006.01); B22D 21/00 (2006.01); B22D 25/02 (2006.01); B22D 25/06 (2006.01); B22D 27/04 (2006.01); C30B 13/00 (2006.01); C22C 19/05 (2006.01); C30B 29/52 (2006.01);
U.S. Cl.
CPC ...
B22D 27/045 (2013.01); B22D 21/005 (2013.01); B22D 25/02 (2013.01); B22D 25/06 (2013.01); C22C 19/057 (2013.01); C30B 13/00 (2013.01); C30B 29/52 (2013.01); F01D 5/147 (2013.01); F05D 2220/30 (2013.01); F05D 2230/21 (2013.01); F05D 2240/307 (2013.01);
Abstract

A casting method and cast article are provided. The casting method includes providing a casting furnace, the casting furnace including a withdrawal region in a lower end, positioning a mold within the casting furnace, positioning a molten material in the mold, partially withdrawing the mold a withdrawal distance through the withdrawal region in the casting furnace, the withdrawal distance providing a partially withdrawn portion, then reinserting at least a portion of the partially withdrawn portion into the casting furnace through the withdrawal region, and then completely withdrawing the mold from the casting furnace. The reinserting at least partially re-melts a solidified portion within the partially withdrawn portion to reduce or eliminate freckle grains. The cast article includes a microstructure and occurrence of freckle grains corresponding to being formed by a process comprising partially withdrawing, reinserting, and completely withdrawing of a mold from a casting furnace to form the cast article.

Find Patent Forward Citations

Loading…