Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing Omega-shaped stringer based on precursor impregnation and cracking process
The invention provides a method for preparing an Omega-shaped stringer based on a precursor impregnation and cracking process, which is characterized in that a forming tool is designed in allusion tothe characteristics of the precursor impregnation and cracking process and the Omega-shaped stringer, small-batch accurate manufacturing of the Omega-shaped stringer is achieved by controlling the profile of a component through isostatic pressing forming, designing a dipping flow channel and controlling high-temperature cracking uniform heat conduction. Uniform transfer of mold pressing stress ofthe ceramic matrix composite material complex surface stringer component is innovatively achieved through isostatic pressing forming, it is guaranteed that a fiber prefabricated body is evenly stressed and controllable in thickness, and the problem that the component forming quality is not high due to uneven pressing is solved; and in the densification process, it is guaranteed that the whole Omega-shaped stringer is mainly heated in a heat conduction mode, the temperature uniformity of the Omega-shaped stringer in the temperature rise-cracking process is guaranteed, distortion and deformation, which are caused by uneven heating, of components of the Omega-shaped stringer are avoided, and the preparation quality and precision of the components are improved.
发明提出了一种基于先驱体浸渍裂解工艺制备欧米茄形长桁的方法，针对先驱体浸渍裂解工艺及欧米茄形长桁的特点，设计了成型工装，通过等静压成形控制构件形面、通过浸渍流道设计、高温裂解均匀热传导控制实现了欧米茄形长桁的小批量精确制造。本发明创新性地通过等静压成形实现了陶瓷基复合材料复杂形面长桁构件模压应力的均匀传递，保证纤维预制体受力均匀，厚度可控，避免了因受压不均匀而造成的构件成形质量不高的问题；在致密化过程中确保欧米茄形长桁整体主要受热传导方式加热，保证在升温‑裂解过程中欧米茄形长桁的温度均匀性，避免因受热不均匀而导致欧米茄长桁构件的扭曲与变形，提高了构件的制备质量与精度。
Method for preparing Omega-shaped stringer based on precursor impregnation and cracking process
The invention provides a method for preparing an Omega-shaped stringer based on a precursor impregnation and cracking process, which is characterized in that a forming tool is designed in allusion tothe characteristics of the precursor impregnation and cracking process and the Omega-shaped stringer, small-batch accurate manufacturing of the Omega-shaped stringer is achieved by controlling the profile of a component through isostatic pressing forming, designing a dipping flow channel and controlling high-temperature cracking uniform heat conduction. Uniform transfer of mold pressing stress ofthe ceramic matrix composite material complex surface stringer component is innovatively achieved through isostatic pressing forming, it is guaranteed that a fiber prefabricated body is evenly stressed and controllable in thickness, and the problem that the component forming quality is not high due to uneven pressing is solved; and in the densification process, it is guaranteed that the whole Omega-shaped stringer is mainly heated in a heat conduction mode, the temperature uniformity of the Omega-shaped stringer in the temperature rise-cracking process is guaranteed, distortion and deformation, which are caused by uneven heating, of components of the Omega-shaped stringer are avoided, and the preparation quality and precision of the components are improved.
发明提出了一种基于先驱体浸渍裂解工艺制备欧米茄形长桁的方法，针对先驱体浸渍裂解工艺及欧米茄形长桁的特点，设计了成型工装，通过等静压成形控制构件形面、通过浸渍流道设计、高温裂解均匀热传导控制实现了欧米茄形长桁的小批量精确制造。本发明创新性地通过等静压成形实现了陶瓷基复合材料复杂形面长桁构件模压应力的均匀传递，保证纤维预制体受力均匀，厚度可控，避免了因受压不均匀而造成的构件成形质量不高的问题；在致密化过程中确保欧米茄形长桁整体主要受热传导方式加热，保证在升温‑裂解过程中欧米茄形长桁的温度均匀性，避免因受热不均匀而导致欧米茄长桁构件的扭曲与变形，提高了构件的制备质量与精度。
Method for preparing Omega-shaped stringer based on precursor impregnation and cracking process
一种基于先驱体浸渍裂解工艺制备欧米茄形长桁的方法
QIU HAIPENG (Autor:in) / LIU SHANHUA (Autor:in) / LIU SHIJIAN (Autor:in) / XIE WEIJIE (Autor:in) / CHEN MINGWEI (Autor:in) / ZHAO YULIANG (Autor:in) / ZHANG BINGYU (Autor:in) / GUAN HONG (Autor:in) / WANG QIMING (Autor:in)
25.12.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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