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    • 1. 发明授权
    • Method of producing a nozzle or a divergent nozzle element made of a composite
    • 制造由复合材料制成的喷嘴或发散喷嘴元件的方法
    • US08615877B2
    • 2013-12-31
    • US13054348
    • 2009-07-13
    • François CharleuxJean-Marie ParenteauBernard Delperier
    • François CharleuxJean-Marie ParenteauBernard Delperier
    • B21D53/00
    • C04B35/806C04B35/565C04B35/83C04B2235/614C04B2235/616C04B2235/72C04B2235/722C04B2235/723F02K9/97F05D2300/601F05D2300/603
    • A fiber preform is obtained by conforming panels of fiber texture on a former having a surface that reproduces the shape desired for a surface of the nozzle or the nozzle divergent section that is to be made. The panels are bonded together via their mutually contacting edges. A consolidated fiber reinforcement is formed by shaping the fiber preform impregnated with a consolidation composition including a resin. The shaping of the fiber preform is performed between the former and a jacket applied against the impregnated fiber preform so as the consolidated fiber reinforcement has a fiber volume percentage of at least 35%, and a thickness of less than 5 mm over at least a major fraction of its axial dimension. The densification of the fiber reinforcement is continued by chemical vapor infiltration after pyrolyzing the resin so that once densified, a part is obtained that has practically the shape and the wall thickness of the nozzle or the nozzle divergent section that is to be made.
    • 通过在具有再现喷嘴的表面所需形状的表面或要制造的喷嘴发散部分的表面上使纤维织构的面板相符合来获得纤维预制件。 面板通过相互接触的边缘粘合在一起。 通过使浸渍有包含树脂的固化组合物的纤维预制件成形来形成固结的纤维增强材料。 纤维预成型件的成型在前者和施加在浸渍的纤维预制件上的护套之间进行,因此固结的纤维增强材料的纤维体积百分比至少为35%,厚度小于5mm至少大于 其轴向尺寸的分数。 在热解树脂之后,纤维增强物的致密化继续通过化学气相渗透,使得一旦致密化,获得实际上具有实际上要形成的喷嘴或喷嘴发散部分的形状和壁厚的部分。