Back to results
US 9,061,350 B2Granted
Ceramic core compositions, methods for making cores, methods for casting hollow titanium-containing articles, and hollow titanium-containing articles
AssigneeGeneral Electric Company
InventorsBernard Patrick Bewlay, Joan McKiever, Brian Michael Ellis, Nicholas Vincent McLasky
Life of this patent
Estimating the term…
Abstract
The disclosure relates generally to core compositions and methods of molding and the articles so molded. More specifically, the disclosure relates to core compositions and methods for casting hollow titanium-containing articles, and the hollow titanium-containing articles so molded.
Claims21
A method of making a ceramic core, comprising:
- a) combining calcium aluminate particles with large scale particles and a liquid to form a slurry;
- b) introducing the slurry into a die to produce a green product of an article-shaped body;
- and
- c) heating the green product under conditions sufficient to form a ceramic core wherein the calcium aluminate particles comprise particles of up to about 50 microns in outside dimension.
1 more element
A method for casting a hollow turbine component, comprising:
- (i) making a ceramic core by:
- a) combining calcium aluminate particles with large scale particles and a liquid to form a slurry;
- b) introducing the slurry into a die to produce a green product of an article-shaped body;
- and
- c) heating the green product under conditions sufficient to form a sintered ceramic core;
- (ii) disposing the ceramic core in a pre-selected position within a mold;
- (iii) introducing a molten titanium or titanium alloy-containing material into the mold;
- (iv) cooling the molten material, to form the turbine component within the mold;
- (v) separating the shell mold from the turbine component;
- and
- (vi) removing the core from the turbine component, so as to form a hollow turbine component wherein the calcium aluminate particles comprise particles of up to about 50 microns in outside dimension.
8 more elements
Dependencies are inferred from the claim text.