Patent ID: 11933188
Assignee: PRATT & WHITNEY CANADA CORP.
Field: Materials, metallurgy (Chemistry)
Classification: CPC F  B | IPC B  F

Claim 16:
17. The method as defined in claim 14, further comprising forming the cooling passages in the platform by:
providing a mold defining a mold cavity that includes a platform cavity shaped to define the platform of the shroud segment;
providing an insert extending partly through the platform cavity, the insert including a plurality of elongated pins extending in the platform cavity along and spaced apart from a mold surface;
injecting a powder injection molding feedstock into the mold cavity to obtain a green part with a platform portion through which at least part of the elongated pins extend;
disengaging the green part from the mold, including sliding the elongated pins out of the platform portion of the green part to define a plurality of elongated cooling passages in the platform of the shroud segment, the elongated cooling passages disposed radially between inner and outer surfaces of the platform portion; and
debinding and sintering the green part to define the shroud segment.