Refractory metal core finishing technique
AssigneeRaytheon Technologies Corporation
InventorsDewight R. Cassells, Alan C. Barron, John P. Rizzo, Gordon Miller Reed, Tracy A. Propheter-Hinckley
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Abstract
A refractory metal core (RMC) finishing method according to an exemplary aspect of the present disclosure includes, among other things, performing a plurality of finishing operations on a plurality of RMC samples, analyzing one or more properties of at least a portion of the plurality of RMC samples and selecting a combination of finishing operations for generating an RMC having desirable properties for manufacturing a part free from defects.
Claims17
A refractory metal core (RMC) finishing method, comprising:
- performing a plurality of finishing operations on a plurality of RMC samples;
- analyzing one or more properties of at least a portion of the plurality of RMC samples, wherein the one or more properties include at least break edge sharpness and surface finish;
- based on the analyzing step, selecting a combination of finishing operations for generating an RMC [having desirable properties for manufacturing a part free from defects];
- and
- performing the combination of finishing operations to provide an RMC for manufacturing a part that is free from at least one of alloying, spallation and recrystallization.
A method, comprising:
- performing a plurality of finishing operations on a plurality of refractory metal core (RMC) samples;
- measuring break edge and surface finish properties associated with at least a portion of the plurality of RMC samples;
- performing validation operations on the portion of the plurality of RMC samples;
- based on the measuring step and the validation operations performed, selecting a combination of finishing operations for generating an RMC [having desirable properties for casting a part free from defects];
- and
- performing the combination of finishing operations to provide an RMC for manufacturing a part that is free from at least one of alloying, spallation and recrystallization.
A refractory metal core (RMC) finishing method, the method comprising:
- measuring at least one property of a plurality of RMC samples;
- splitting the plurality of RMC samples into at least two portions;
- harperizing one of the at least two portions for a first amount of time;
- harperizing the other of the at least two portions for a second amount of time different from the first amount of time;
- after the harperizing steps, measuring the at least one property of the plurality of RMC samples;
- coating the plurality of RMC samples;
- and
- performing at least one validation operation on the plurality of RMC samples,
- wherein the measuring at least one property of a plurality of RMC samples includes measuring the sharpness of break edges and the surface finish of the plurality of RMC samples.
Dependencies are inferred from the claim text.