Gas turbine component with cooling holes

摘要

The impact plate (2) etc. has bores (1) for cooling air (4) containing particles (5). The bore has devices to prevent the particles from clogging it. The devices are e.g. formed by an uneven upper bore edge with a ridge (3). The ridge is formed by cutting or stamping, or during casting of the blade. Alternatively, the device may be a bracket or wire mesh located above the bore. The cooling air bore is formed by a Laser beam, water jet, or electrode jet. The impact plate etc. may be a cast or a metal plate part.