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Carbon fiber composite material train body forming process for high-speed train and train body

A composite material and high-speed train technology, applied in the field of rail vehicle body, can solve the problems of high requirements on mechanical properties of composite materials, and achieve the effects of improving mechanical properties, high heating efficiency, and reducing internal stress

Active Publication Date: 2021-04-02
CRRC CHANGCHUN RAILWAY VEHICLES CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] As one of the important parts of the vehicle, the car body structure is generally made of aluminum alloy profiles and carbon steel plate beam structures. The composite material structure has high specific stiffness and specific strength characteristics. Its application in the field of rail transit mainly focuses on the interior decoration of the car body. However, the mechanical performance requirements of composite materials for high-speed vehicle body structure are relatively high, and the plate beam type and foam sandwich composite material structure can no longer meet its performance requirements. vehicle

Method used

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  • Carbon fiber composite material train body forming process for high-speed train and train body
  • Carbon fiber composite material train body forming process for high-speed train and train body
  • Carbon fiber composite material train body forming process for high-speed train and train body

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Embodiment Construction

[0033] refer to figure 1 , the specific embodiment of the present invention is to provide a carbon fiber composite car body forming process for high-speed trains, which is characterized in that the car body forming process includes the following steps:

[0034] Step 1, core preforming: a layer of vacuum bag I7, a layer of air felt I8 and a layer of peelable cloth I9 are sequentially attached to the outer surface of the "mouth" or "⊿" shaped flexible core mold 6, the peelable cloth Ⅰ9 Lay carbon fiber prepreg on the outer layer to the required thickness to make a "mouth" or "⊿" shaped core preform 4; wherein the "mouth" or "⊿" shaped flexible core mold 6 is barrel-shaped , consisting of four or three mold plates fixedly combined at both ends, the mold plates can be replaced as required, and the relative position of the mold plates of each core mold can be adjusted;

[0035] Step 2, preforming the inner shell of the car body: the inner shell forming mold 10 is constrained by th...

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Abstract

The invention aims to provides a carbon fiber composite material train body forming process for a high-speed train. A composite material sandwich structure train body is prepared by prefabricating a train body structure and co-curing and integrally forming, the production process adopts an autoclave-free forming process and is efficient and economical, the train body produced by adopting the carbon fiber composite material train body forming process is provided, and the train body has light weight and high strength.

Description

technical field [0001] The invention belongs to the technical field of rail vehicle car bodies, and in particular relates to a carbon fiber composite car body forming process and car body for high-speed trains. Background technique [0002] As the running speed of high-speed trains is getting higher and higher, the heavier the vehicle, the worse the vehicle dynamics, aerodynamic characteristics, traction, braking performance and passive safety characteristics of the vehicle; it is urgent to reduce the quality of high-speed train vehicles, and the lightweight structure is The development trend of higher speed trains in the future. [0003] As one of the important parts of the vehicle, the car body structure is generally made of aluminum alloy profiles and carbon steel plate beam structures. The composite material structure has high specific stiffness and specific strength characteristics. Its application in the field of rail transit mainly focuses on the interior decoration o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/34B29C35/02B29L31/30
CPCB29C70/342B29C35/02B29L2031/3064Y02T30/00
Inventor 丛立新章慧鸣吴靖王蕾
Owner CRRC CHANGCHUN RAILWAY VEHICLES CO LTD
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