Process and system for forming shaped air holes

摘要

A process is provided for forming shaped air holes, such as for use in turbine blades. Aspects of the disclosure relate to forming shaped portions of air holes using a short pulse laser, forming a metered hole corresponding to each shaped portion, and separately finishing the shaped portion using a short-pulse laser. In other embodiments, the order of these operations may be varied, such as to form the shaped portions and to finish the shaped portions using the short-pulse laser prior to forming the corresponding metered holes.

主权项

1. A method for forming shaped holes, comprising:
forming a plurality of shaped portions of air holes in a turbine component using a first short-pulse laser; after forming the plurality of shaped portions, then forming a plurality of metered holes through the turbine component extending from the shaped portions of the air holes to an inner cavity of the turbine component, wherein each metered hole corresponds to one of the plurality of shaped portions of air holes; and after forming the plurality of metered holes, then finishing the air holes by smoothing, applying surface textures, and/or applying surface contours to the respective shaped portions.