Laminated plate forming device and method based on electro-hydraulic forming

A technology of electro-hydraulic forming and power supply device, which is applied in the field of processing and forming of metal matrix composite materials. It can solve the problems of poor plasticity of fiber reinforced layer, obvious rebound of plate parts, and difficult processing, so as to reduce shear force and increase forming limit. , the effect of a wide range of application

Inactive Publication Date: 2014-07-23
HUNAN UNIV
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Problems solved by technology

At room temperature, the plasticity of the fiber-reinforced layer is relatively poor, and it is prone to brittle failure and other failures when it is formed by stamping, resulting in difficult processing; when the temperature is increased for stamping, the rebound of the plate will be more obvious

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  • Laminated plate forming device and method based on electro-hydraulic forming
  • Laminated plate forming device and method based on electro-hydraulic forming
  • Laminated plate forming device and method based on electro-hydraulic forming

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Embodiment Construction

[0044] The technical solutions of the present invention will be further illustrated and described below in conjunction with the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0045]When thermoplastic glass fiber reinforced aluminum alloy laminates are formed, there are special requirements for the forming process. If the holding time, holding temperature, cooling rate, mold material, etc. during forming are not selected properly, it will cause defects such as wrinkling, interlayer cracking and fiber bending of the laminate, which will greatly affect the performance of the laminate. Therefore, many influencing factors should be cons...

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Abstract

The invention provides an electro-hydraulic forming device for a thermal-plastic glass fiber enhanced aluminum alloy laminated plate. The device comprises a power supply device, a mold and a fixed heating device, and is characterized in that the mold is a graphite female mold (2); an exhaust hole (15) is formed in the bottom of the graphite female mold (2), and a vacuum pump can be used for emptying gas in the graphite female mold (2); during forming, the graphite female mold (2) is positioned through a circular groove in a graphite base (4), and a hydraulic cylinder (14) applies pressure to the graphite female mold (2) so as to fix the graphite female mold (2). According to the forming device, by the full use of a high-rate forming characteristic of electro-hydraulic forming, interlamination shearing force in the forming process can be reduced, so that the interlamination cracking is reduced, and the transverse rigidity of a laminated plate can be improved; furthermore, due to the high-rate forming characteristic of the electro-hydraulic forming, the problem of large recurrent magnitude caused by preheating punching can be solved, and the shape and orientation precision higher than that by adopting punching forming is achieved.

Description

technical field [0001] The invention belongs to the field of processing and forming of metal matrix composite materials, and in particular relates to a forming device and method of a composite plate based on electro-hydraulic forming. Background technique [0002] Fiber reinforced metal laminates (Fibre Reinforced Metal Laminates, FRML) is a special metal matrix composite material, which is alternately laminated by metal alloy sheets and fiber / resin layups by bonding technology. Fiber-reinforced metal laminates have excellent comprehensive properties, and glass fiber-reinforced aluminum alloy laminates are currently the most widely used. It not only has the advantages of high specific strength, specific stiffness, good plasticity and impact resistance of metal materials, but also retains the good fatigue resistance of fiber reinforced materials and is relatively light in weight, which is in line with the future development direction of lightweight. In addition, fiber-reinfo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/44B21D26/00
CPCB21D26/00B29C70/443
Inventor 崔俊佳孙光永李光耀单业奇
Owner HUNAN UNIV
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