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US 11,331,865 B2Granted
Method for producing a hollow support from a fiber composite material, core designed as a hollow body, use of said core, and use of said hollow support made from fiber composite
AssigneesCrrc Qingdao Sifang Co., Ltd., Cg Rail—Chinesisch-Deutsches Forschungs—Und Entwicklungszentrum FüR Bahn—Und Verkehrstechnik Dresden GmbH
InventorsSansan Ding, Xiaojun Deng, Yuwen Liu, Xu Chen, Li Dong, Mao Cai, Xu Zhang, Werner Hufenbach, Andreas Ulbricht
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Abstract
The application relates to a method for producing a hollow support from a fiber composite material, to a core designed as a hollow body, to the use of said core, and to the use of said hollow support made from fiber composite material.
Claims15
Method for producing a hollow support from a fibre composite material, comprising at least the following method steps:
- a) preparing a moulded body, formed as a hollow body, from a fibre composite material comprising reinforcing fibres and a soluble plastic matrix made of a matrix material soluble using a solvent;
- b) arranging a vacuum setup comprising at least one film-like layers, or a pressure hose, on the outer surface of the moulded body;
- c) depositing the reinforcing fibres of the hollow support on the outer surface of the vacuum setup or pressure hose arranged on the outer surface of the moulded body to form a hollow support preform;
- d) arranging the hollow support preform in an outer tool;
- e) infiltrating the reinforcing fibres of the hollow support with matrix material;
- f) generating a negative pressure between vacuum setup and inner surface of the outer tool or a positive pressure between outer surface of the moulded body and pressure hose;
- g) consolidating the fibre composite of the hollow support made of reinforcing fibres and matrix material with the formation of an outer surface of the hollow support formed on the inner surface of the outer tool;
- h) removing the consolidated hollow support from the outer tool;
- i) removing the soluble plastic matrix of the moulded body by dissolving using a solvent;
- j) removing the reinforcing fibres of the moulded body and of the vacuum setup via one of the front sides of the hollow support.
7 more elements
Dependencies are inferred from the claim text.