| US 7,537,725 B2 | ||
| Method for making a compositionally graded gas turbine disk | ||
| Jon Raymond Groh, Loveland, Ohio (US); Eric Allen Ott, Cincinnati, Ohio (US); Robert Edward Schafrik, Cincinnati, Ohio (US); and Daniel Donald Krueger, Cincinnati, Ohio (US) | ||
| Assigned to General Electric Company, Schenectady, N.Y. (US) | ||
| Filed on Sep. 19, 2005, as Appl. No. 11/229,823. | ||
| Application 11/229823 is a continuation in part of application No. 11/130764, filed on May 17, 2005. | ||
| Prior Publication US 2006/0263231 A1, Nov. 23, 2006 | ||
| Int. Cl. B22F 7/00 (2006.01); B23P 15/04 (2006.01) | ||
| U.S. Cl. 419—6 [419/41; 419/42; 148/675; 148/677; 148/409; 29/889.2; 29/889.23] | 19 Claims |
| 1. A method for making a compositionally graded gas turbine disk, comprising the steps of
providing an outer container having an interior;
placing a slip case into the interior of the outer container to define a first portion of the interior, a second portion of
the interior, and a transition region between the first portion and the second portion;
loading a first powder into the first portion of the interior, wherein the first powder has a first composition;
loading a second powder into the second portion of the interior, wherein the second powder has a second composition different
from the first composition;
removing the slip case so that the first powder and the second powder contact at the transition region and form a non-compacted
powder mass; thereafter
agitating the first powder and the second powder to intermix the first powder and the second powder at the transition region;
and thereafter
processing the non-compacted powder mass into the gas turbine disk.
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