Method for forming near-surface cooling passages in components subjected to high stresses by heat and components having such passages

摘要

The present invention is a method of forming a near-surface cooling passage (17) in a component (14) that receives high stress due to heat, and comprises the following steps: a) the surface (HS) on the high temperature side (HS) in the cooled region Providing a component (14) having 18), b) providing a channel (19) on the surface (18), c) inserting a cooling tube (20) into the channel (19), d ) The channel (20) with the cooling tube (20) inserted so that the inserted cooling tube (20) is embedded in the filling material (21) and the inlet (17i) and outlet (17o) are open. 19) filling with heat-resistant filling material (21), and e) channel (19) with anti-oxidation temperature stable cover layer (22) with cooling pipe (20, 25, 30, 36) embedded. Covered by And the step, which method comprises. This method is inexpensive and can be used flexibly in most diverse situations to conserve cooling media or reduce heat load.