| 摘要 |
The present invention concerns a cooled gas turbine blade comprising a foundry part and a longitudinal sleeve obtained by the forming of metal sheet, the foundry part including a longitudinal body provided with a longitudinal cavity with first and second apertures at its ends, the sleeve being mounted in the cavity being held therein by soldering or brazing to the wall of the first aperture, and an end portion of which is free to slide in the second slide-forming aperture. The blade is characterized by the fact that the end portion and the slide are in sliding contact relatively to surfaces formed by machining. According to a preferred embodiment of the invention, a sealing insert is positioned between the end portion of the sleeve and the wall of the second aperture, this insert is integral with the sleeve. The assembly of the invention provides a reduction in the leak rate of the cooling air between the sleeve and the slide-forming aperture.
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