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Microwave-hydro-forming method and device of composite material

A composite material and hydroforming technology, applied in the field of microwave-hydroforming methods and devices, microwave heating and curing composite materials, can solve problems such as uneven force, and achieve the effect of good openness and good convenience

Inactive Publication Date: 2015-05-06
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to design a microwave-hydraulic forming method for composite materials that can uniformly apply pressure to the upper and lower surfaces of composite material parts in view of the problem of uneven force on composite material parts in the existing composite material microwave curing process , while providing a corresponding molding device

Method used

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  • Microwave-hydro-forming method and device of composite material
  • Microwave-hydro-forming method and device of composite material

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Experimental program
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Effect test

Embodiment 1

[0023] Such as Figure 1-2 shown.

[0024] A microwave-hydroforming method for composite materials: the key is to apply balanced liquid pressure to the upper and lower surfaces of a composite material part 12 during microwave heating of the composite material, so as to effectively compact the composite material part 12 . The upper and lower pressure-resistant and high-temperature-resistant rubber capsules 15, 16 and the sealing ring 7 form a closed space, and the two rubber capsules 15, 16 are tightly attached to the composite material and the mold 13 respectively by vacuuming. The microwave generated by the microwave generator 4 heats and cures the composite material. During the curing process, the liquid pressure generated by the fluid medium in the upper and lower rubber bladders is applied to the composite material and the surface of the mold to provide uniform compaction force. The pressure adjustment range in the upper and lower rubber bladders is between 0 and 20MPa. ...

Embodiment 2

[0028] Such as Figure 1-2 shown.

[0029] A microwave-hydroforming device for composite materials, which includes an upper rubber bladder 15, a lower rubber bladder 16, a mold 13, an array microwave generator 4, and a mold opening and closing system. In addition to the opening and closing functions of the mold opening and closing system, It is also possible to apply external pressure after closing so that the upper rubber bladder 15 and the lower rubber bladder 16 simultaneously press the sealing ring 7 to form a closed space, and the composite material part 12 is placed on the mold 13, and the mold 13 and the composite material part 12 are located at the In the above-mentioned confined space; the upper rubber bag 15 and the lower rubber bag 16 are filled with a fluid medium 8 and are respectively provided with a liquid medium input port 2 for pressurization and a liquid medium output port 6 for decompression, The enclosed space is connected with a vacuum air outlet 17; the ...

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Abstract

The invention discloses a microwave-hydro-forming method and device of a composite material. The microwave-hydro-forming method is characterized in that the composite material is heated up by adopting microwaves; in the heating process, balanced liquid pressure is applied to upper and lower surfaces of a composite material manufactured piece; the composite material manufactured piece is effectively compacted and cured. The device mainly comprises an array microwave generator, a liquid pressure control system and a mold opening and closing system. According to the invention, the difficulties that the composite material in the traditional autoclave forming technology is rapid in forming speed, is high in temperature and pressure control hysteresis quality, and is high in cost are solved; the microwave-hydro-forming method and device have wide market value and application prospect in the technical field of forming the composite material with high performance and low cost.

Description

technical field [0001] The present invention relates to a thermosetting molding technology for all composite materials, especially a technology for microwave heating and curing composite materials, specifically a method that can apply liquid pressure to the upper and lower surfaces of composite material parts during the heating process, effectively curing and Composite microwave-hydroforming method and apparatus for compacting composite parts. Background technique [0002] Fiber-reinforced resin-based composites have the advantages of high specific strength and specific stiffness, light weight, corrosion resistance, and fatigue resistance, and have been widely used. Composite autoclave molding method is a main molding process, but the problems of autoclave molding technology are: autoclave heats and solidifies composite parts through heat convection and heat conduction, which has low efficiency, long time and energy consumption. high. At the same time, there are problems o...

Claims

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Application Information

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IPC IPC(8): B29C70/44B29C70/54B29C35/08
CPCB29C70/443
Inventor 李迎光李楠垭何永喜
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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