Patent ID: 6244327
Filing Date: 2001-06-12
Classification: B22C,B22D,F01D,F05D,Y02T

Abstract:
A method of making a multi-wall alloy structure comprising:providing a main core corresponding to a void in the structure;providing a high thermal conductivity member having a higher thermal conductivity than a thin wall in the structure which has a thickness of less than 0.03 inches;providing a first removable pattern material covering the main core corresponding to a first wall of the structure;providing a thin core having a density greater than 70 percent in fixed relationship to the main core so as to correspond to a thin passageway in the structure;providing a second removable pattern material covering the thin core so as to correspond to the thin wall in the structure;inserting the high thermal conductivity member through the thin core so that it contacts the removable patterns;surrounding the second removable pattern with a casting mold so as to define the outer surface of the thin wall;removing the patterns to leave the cores in fixed relationship with each other and the casting mold;charging the casting mold with molten alloy and varying charge pressure with time so that the thin wall is formed without causing the casting mold to creep;solidifying the molten alloy and removing the casting mold and the cores to provide the multi-wall alloy structure with the high thermal conductivity member connected thereto.