| 摘要 |
A hollow-type turbine blade produced by a casting process has a cooling air cavity ( 8 ) and film cooling ducts ( 12 ) originating at this cooling air cavity ( 8 ). Adjacent film cooling ducts with a large length-diameter ratio are connected by cross-ducts ( 13 ) which are offset relative to each other and arranged vertically to the film cooling ducts. The casting mold comprises a core corresponding to a brickwall design of the film cooling ducts and the cross-ducts, with long core pins being intersupported by cross pins. The turbine blade, including all film cooling ducts, can be produced with high quality in a casting process.
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