Method of shaping green part and manufacturing method using same
AssigneePratt & Whitney Canada Corp.
InventorsMarc Campomanes, Orlando Scalzo, Guillaume Poitras
Life of this patent
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Abstract
A method of shaping a part in a green state obtained through powder injection molding, including placing a surface of the part in contact with a shaping surface of a setter with at least one section of the surface of the part not conforming to the shaping surface, and locally heating at least one area of each of the at least one section to deform the part until the at least one section conforms to the shaping surface. The part remains in the green state during the local heating. The part may be a heat shield panel for a gas turbine engine.
Claims20
A method of manufacturing a heat shield panel for a gas turbine engine, the method comprising:
- molding the heat shield panel in a green state by powder injection molding, the heat shield panel having a platform section defining a reference surface;
- with the heat shield panel in the green state, placing the platform section on a setter with the reference surface against a shaping surface of the setter, the reference surface having an initial shape not conforming to the shaping surface;
- locally heating at least one area of the platform section to deform the platform section until the reference surface conforms to the shaping surface and has a final shape different from the initial shape, the at least one area of the heat shield panel remaining in the green state during the local heating;
- and
- debinding and sintering the heat shield panel after the reference surface has reached the final shape.
A method of manufacturing a panel element for a gas turbine engine, the method comprising:
- molding the panel element in a green state by powder injection molding, the panel element defining a reference surface and two elongated features each extending along a respective axis;
- with the panel element in the green state, placing the panel element on a setter with the reference surface against a shaping surface of the setter, the reference surface having an initial shape not conforming to the shaping surface;
- locally heating at least one area of the panel element spaced apart from the elongated features to deform the panel element until the reference surface conforms to the shaping surface and has a final shape different from the initial shape, an angle between the respective axes of the elongated features changing as the panel element deforms to reach a final desired angle once the reference surface conforms to the shaping surface, the at least one area of the panel element remaining in the green state during the local heating;
- and
- debinding and sintering the panel element after the reference surface has reached the final shape.
A method of shaping a part in a green state obtained through powder injection molding, the method comprising:
- with the part in the green state, placing a surface of the part in contact with a shaping surface of a setter, at least one section of the surface of the part not conforming to the shaping surface;
- and
- locally heating at least one area of each of the at least one section to deform the part until the at least one section conforms to the shaping surface, the part remaining in the green state during the local heating.
Dependencies are inferred from the claim text.