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    • 51. 发明公开
    • Method of manufacturing a duct for a gas turbine engine
    • Verfahren zur Herstellung eines Blechkanalsfüreine Gasturbine
    • EP1712742A2
    • 2006-10-18
    • EP06251983.0
    • 2006-04-08
    • Rolls-Royce plc
    • Green, RichardFrost, PeterAnnear, Michael
    • F01D9/02F02K1/00
    • F02K9/80F01D9/023F01D25/24F02K9/84F02K9/86F05D2230/26F05D2230/40F05D2300/133F05D2300/5021Y10T29/4932Y10T29/4933Y10T29/49616Y10T29/49799Y10T29/49865Y10T29/49968
    • The present invention provided a method of manufacturing a duct for a gas turbine engine or the like from sheet metal material; the method comprising the steps of: fabricating a duct from sheet material (10,12,14) including rolling or folding metal sheet along ruled lines to form a ruled surface geometry approximately corresponding to at least part of a desired irregular final duct geometry; welding corresponding rolled or folded parts of the duct skin together and positioning the duct on a heat treatment fixture (30) having a shape corresponding to the said desired irregular duct geometry; the material of the heat treatment fixture having a greater thermal expansion coefficient than the duct material; heating the duct and fixture substantially to a stress relieving temperature of the duct material such that differential thermal expansion of the duct and fixture at the said stress relieving temperature causes the duct to distort and adopt the shape of the exterior surface of the fixture on which the duct is located.
    • 本发明提供了一种从金属板材料制造燃气轮机发动机等的管道的方法; 该方法包括以下步骤:从片材(10,12,14)制造管道,包括沿着格线滚动或折叠金属片,以形成大致对应于期望的不规则最终导管几何形状的至少一部分的刻线表面几何形状; 将管道皮肤的相应的轧制或折叠部分焊接在一起并将管道定位在具有对应于所述期望的不规则管道几何形状的形状的热处理夹具(30)上; 所述热处理夹具的材料具有比所述导管材料更大的热膨胀系数; 将管道和夹具基本上加热到管道材料的应力消除温度,使得管道和固定装置在所述应力消除温度下的不同热膨胀导致管道变形并采用固定装置的外表面的形状, 管道位于。