Method for making turbine engine components using metal injection molding
AssigneeROLLS-ROYCE plc
InventorsTimothy Paul Fuesting, Logan Kroneman
Life of this patent
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Abstract
A method for manufacturing a turbine shroud segment with at least one undercut region. The method includes forming a removable insert including an external surface corresponding to at least a portion of a wall of the undercut region in the turbine shroud segment; placing the removable insert in a mold including a mold cavity corresponding to a shape of the turbine shroud segment; injecting a metal injection molding (MIM) feedstock into the mold cavity and around the removable insert to form a shroud green body with the at least one undercut region; and, sintering the shroud green body to form the shroud body.
Claims10
A method for manufacturing a turbine shroud segment with at least one undercut region comprising an overhang and at least one arcuate wall portion, the method comprising:
- providing a mold comprising a mold cavity corresponding to a shape of the turbine shroud segment, wherein the mold cavity comprises a first adjustable tool with an external surface corresponding to a shape of the at least one an arcuate wall portion in a first undercut region of the at least one undercut region, wherein the mold cavity comprises a second adjustable tool with an external surface corresponding to a shape of an arcuate wall portion in a second undercut region of the at least one undercut region;
- adjusting the first adjustable tool to provide a desired configuration of the arcuate wall portion in the first undercut region, wherein the first adjustable tool does not extend beyond the first undercut region;
- adjusting the second adjustable tool to provide a desired configuration of the arcuate wall portion in the second undercut region, wherein the second adjustable tool does not extend beyond the second undercut region;
- injecting with a metal injection molding (MIM) process a metal powder mixture into the mold cavity and around the first adjustable tool and the second adjustable tool to form a shroud green body having the first undercut region and the second undercut region;
- and
- sintering the shroud green body to form the shroud body.
Dependencies are inferred from the claim text.