公开(公告)号：US11945025B1

公开(公告)日：2024-04-02

申请号：US18131611

申请日：2023-04-06

Applicant: Raytheon Technologies Corporation

Inventor： Ryan C. Breneman ,  Markian Stephan Blazejowskyj ,  Blake Matthew Wilmore

IPC: B22C9/04 ,  B22C9/10 ,  B22C9/12 ,  B22C9/26 ,  F01D5/18

CPC classification number: B22C9/04 ,  B22C9/103 ,  B22C9/12 ,  B22C9/26 ,  F01D5/187 ,  F05D2230/21

Abstract: A casting method includes passing a metallic spacer through respective apertures in at least two ceramic cores to an installed condition wherein the spacer defines a minimum local separation between the at least two cores. The spacer has a shank and at least one arm extending from the shank. A sacrificial pattern material is molded over the metallic spacer and the at least two ceramic cores and then shelled and fired. An alloy is cast in the shell the shell is removed from the cast alloy.