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A manufacturing process of a carbon-fibre composite material U-shaped part

A technology of composite material and manufacturing process, which is applied in the field of manufacturing process of carbon fiber composite U-shaped parts, can solve problems affecting reliability and precision, rich resin and delamination, uneven pressure, etc., and achieve improved bridging conditions, inner and outer surfaces Effect of flattening and improving dimensional accuracy

Active Publication Date: 2014-11-26
HENGSHEN
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a manufacturing process of carbon fiber composite U-shaped parts, which can realize the production of carbon fiber composite U-shaped parts with a small opening width, and solve the problem of traditional hand-laid layers in the U-shaped part production process. Due to the limitation of the corner area, problems such as bridging, uneven thickness, and uneven pressure are caused, resulting in defects such as rich resin, delamination, and voids after curing, which seriously affects its reliability and accuracy.

Method used

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  • A manufacturing process of a carbon-fibre composite material U-shaped part
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  • A manufacturing process of a carbon-fibre composite material U-shaped part

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Embodiment

[0022] A manufacturing process for carbon fiber composite material U-shaped parts, laying carbon fiber prepreg on a smooth flat plate, such as glass, steel plate plane, etc. The preform 3 laid on the flat plate is pasted on the convex mold 1 in the figure, as figure 1 , figure 2 As shown, the convex mold 1 is smaller than the concave mold 2, and then the convex mold 1 is put into the concave mold 2 for pre-compaction. Then the convex mold 1 is lifted out, and the preform 3 is prepared by laying up the U-shaped parts.

[0023] On the concave mold 2, the auxiliary materials such as the preform 3, the release cloth 4, the isolation film 5, the air felt 6, and the vacuum bag 7 are placed in sequence, such as image 3 As shown, the external vacuum bag 7 is used for vacuuming, while applying a pressure of 3bar-6bar, heating at 120°C-150°C for curing and molding to obtain a carbon fiber composite U-shaped product.

[0024] The inner concave surface of the preform 3 is con...

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Abstract

A manufacturing process of a carbon-fibre composite material U-shaped part is provided. A U-shaped part product is obtained by steps of: paving a prepreg on a flat plate, tightly covering a convex mould with the paved prepreg, inserting the shaped prepreg and the convex mould as a whole into a concave mould, performing pre-compaction, taking the convex mould out, covering the pre-form with an auxiliary material, heating under a certain pressure, curing and moulding. The process overcomes the problem that U-shaped parts with small opening widths are not liable to pave, reduces the degree of difficulty of each step, guarantees the flatness of the internal and external surfaces, overcomes the problem that defects caused are liable to generate in corner zones in traditional paving processes, and opens up a new window for manufacturing of carbon-fibre composite material structural parts.

Description

technical field [0001] The invention relates to a manufacturing process of a carbon fiber composite material U-shaped piece. Background technique [0002] With the rapid development of modern technology, higher requirements are put forward for materials. Structural parts made of carbon fiber composite materials have the characteristics of high strength, high modulus and light weight and have good application prospects. The existing U-shaped parts mainly use metal materials, which have the disadvantages of heavy weight, poor corrosion resistance, and short service life. Carbon fiber composite materials have the characteristics of high specific strength and specific modulus, excellent mechanical properties of parts, high safety, designability and integrated molding of parts, etc., and are widely used in various fields, fully meeting the requirements of high assembly precision. [0003] However, because carbon fiber composite materials cannot be laminated in the manufactur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/44B29C70/38
CPCB29C70/386B29C70/44
Inventor 李莹莹陈征辉余伟孙攀钱星宇夏斯将
Owner HENGSHEN
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