Solidification/forming/heat treatment integrated preparation method of carbon fiber metal laminate curved surface piece

A fiber metal laminate and metal laminate technology, which is applied in metal laminate products, chemical instruments and methods, lamination and other directions, can solve the problems of easy failure of components, instability and wrinkling, low shear strength, etc. The effect of good surface quality, avoiding rigid contact and improving processing efficiency

Active Publication Date: 2019-02-15
WUHAN UNIV OF TECH
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AI Technical Summary

Problems solved by technology

[0003] The methods for preparing carbon fiber metal laminates in the prior art include the autoclave method and the molding method. The components processed by the autoclave have stable mechanical properties, uniform pressing, and good surface finish. However, when the aluminum alloy plate is first formed, the thickness and diameter are relatively small , it is very easy to cause instability, wrinkling and cracking, and the autoclave method has a long production cycle
The molding process shortens the production cycle to a certain extent, but due to the uneven stress on the fiber metal laminate during the pressing process, the flow of the resin material in the fiber metal laminate is disordered, and the shear strength between the fiber layer and the aluminum alloy layer is relatively low. Low, the components are prone to failure during actual use; during the molding process, both sides of the fiber metal laminate are in contact with the rigid mold, and the surface quality of the components is poor

Method used

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  • Solidification/forming/heat treatment integrated preparation method of carbon fiber metal laminate curved surface piece
  • Solidification/forming/heat treatment integrated preparation method of carbon fiber metal laminate curved surface piece
  • Solidification/forming/heat treatment integrated preparation method of carbon fiber metal laminate curved surface piece

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preparation example Construction

[0023] The invention provides a solidification / forming / heat treatment integrated preparation method of a carbon fiber metal laminate curved part, which comprises the following steps:

[0024] (1) The carbon fiber resin composite material and the aluminum alloy plate are alternately laminated to obtain a laminated fiber metal laminate; the bottom layer and the top layer of the laminated fiber metal laminate are both aluminum alloy plates;

[0025] (2) Raise the temperature of the laminated fiber metal laminate obtained in the step (1) to 80-100°C, and at the same time subject the laminated fiber metal laminate to one level of double-sided pressing; the direction of the double-sided pressing is non-curing The normal direction of the fiber metal laminate and the lower surface; the pressure applied to the upper surface and the lower surface is equal, 15-20 MPa, to obtain a softened fiber metal laminate;

[0026] (3) Heating the softened fiber metal laminate obtained in step (2) to 120-14...

Embodiment 1

[0063] The solid solution 2219 aluminum alloy plate (thickness 0.8mm, diameter 180mm) and carbon fiber composite material (thickness 0.2mm, diameter 175mm) are alternately stacked and placed, from bottom to top: aluminum alloy plate, carbon fiber composite material, aluminum alloy plate , Lay an adhesive film between the aluminum alloy plate and the carbon fiber composite material to obtain a non-cured fiber metal laminate (total thickness 1.8mm, diameter 180mm, thickness-to-diameter ratio 0.01). The carbon fiber composite material is carbon fiber impregnated with resin, wherein the carbon fiber is a T300 orthogonal woven cloth, and the resin material is a bisphenol A epoxy resin.

[0064] Spray the mold release agent on the mold, place the non-cured fiber metal laminate in the mold, close the mold and apply a blank holder force, the blank holder force value is 20t;

[0065] The mold is heated to 85°C by heating resistor, and the upper and lower inlet pipes are fed with high-pressu...

Embodiment 2

[0071] The solid solution 2219 aluminum alloy plate (thickness 0.8mm, diameter 180mm) and carbon fiber composite material (thickness 0.4mm, diameter 175mm) are alternately stacked, from bottom to top: aluminum alloy plate, carbon fiber composite material, aluminum alloy plate , Carbon fiber composite material, aluminum alloy plate, an adhesive film is placed between the aluminum alloy plate and the carbon fiber composite material to obtain a non-cured fiber metal laminate (total thickness 3.8mm, diameter 180mm, thickness to diameter ratio 0.02). The carbon fiber composite material is carbon fiber impregnated with resin, wherein the carbon fiber is a T500 orthogonal woven cloth, and the resin material is an amino epoxy resin.

[0072] Spray the mold release agent on the mold, and place the non-cured fiber metal laminate in the mold, close the mold and apply a blank holder force, the blank holder force value is 40t;

[0073] The mold is heated to 90°C by heating resistance, and the u...

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Abstract

The invention provides a solidification/forming/heat treatment integrated preparation method of a carbon fiber metal laminate curved surface piece, and belongs to the technical field of multi-layer plate preparation and forming. According to the method, carbon fiber resin composite materials and solid solution-state aluminum alloy plates are alternately laminated to obtain a non-solidified fiber metal laminate; and the non-solidified fiber metal laminate undergoes heating, double-side pressing, heat preservation, solidification, forming and aging treatment to obtain the carbon fiber metal laminate. By adopting the process, the solidification/forming/heat treatment process of the fiber metal laminate can be integrated to significantly improve the processing efficiency; under the action of normal stress, the shear strength between the fiber layers and the aluminum alloy layers is higher and the plasticity of the aluminum alloy plates is better; and double-side gas pressure forming is adopted, so that the rigid contact of molds is avoided and the surface quality of components is better.

Description

Technical field [0001] The invention relates to the technical field of multi-layer boards, in particular to a solidification / forming / heat treatment integrated preparation method of a carbon fiber metal laminate curved part. Background technique [0002] Aluminum alloy materials have the advantages of low density, high strength, good impact resistance, good workability and low cost, which enable them to be widely used in automobiles, construction, aerospace and other industries. However, the low fatigue life and poor corrosion resistance of aluminum alloys limit its further application. Although carbon fiber has high specific strength, high specific modulus, low density, good fatigue resistance and corrosion resistance, the out-of-plane transverse strength and impact resistance of carbon fiber are poor, and it is easy to peel off between layers. In order to combine the advantages of aluminum alloy materials and carbon fiber composite materials, while overcoming their respective s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/08B32B15/20B32B27/04B32B27/06B32B27/38B32B37/06B32B37/10
CPCB32B15/08B32B15/20B32B27/06B32B27/38B32B37/06B32B37/10B32B2255/10B32B2255/02
Inventor 陈一哲刘志文王辉胡志力华林
Owner WUHAN UNIV OF TECH
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