Patent ID: 11965428
Assignee: DOOSAN ENERBILITY CO., LTD.
Field: Materials, metallurgy (Chemistry)
Classification: CPC F  B | IPC F

Claim 9:
10. An airfoil comprising:
a suction surface, a pressure surface, a leading edge, and a trailing edge, which are externally formed on the airfoil;
a cooling path formed inside the airfoil and having a first surface and a second surface opposite to the first surface; and
an additive manufactured (AM) feature disposed in the cooling path, manufactured by additive manufacturing, and comprising a plurality of column parts intersecting with each other and configured to contact the first surface and the second surface,
wherein each of the plurality of column parts is formed in a cylinder shape and includes a list end face and a second end face disposed opposite to each other and a circumferential surface disposed between the first end face and the second end face, and each of the first end face and the second end face is substantially perpendicular to the circumferential surface.