Patent ID: 11883882
Assignee: PRATT & WHITNEY CANADA CORP.
Field: Materials, metallurgy (Chemistry)
Classification: CPC B  F  Y | IPC B  F

Claim 6:
7. A method of forming a component for an aircraft engine from a green part through a powder injection molding process, the method comprising:
forming the green part having an initial shape, including:
injection-molding at least one first layer of the green part in the initial shape with a first feedstock, the at least one first layer having a first solid loading;
injection-molding at least one second layer of the green part in the initial shape with a second feedstock the at least one second layer having a second solid loading smaller than the first solid loading;

curving the green part having the initial shape by debinding and sintering the green part, wherein the curving includes obtaining a final shape of a curved platform section of the component by having the first and second solid loadings producing a different local volume reduction in the at least one first layer with respect to the at least one second layer.