Method for manufacturing integrally-molded composite hat stiffener

A technology of integral molding and composite materials, which is applied in the field of manufacturing new composite hat ribs, can solve the problem of high cost, achieve the effects of reducing consumption, reducing structural weight, and reducing material costs

Inactive Publication Date: 2016-12-14
HENGSHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This new technology allows for faster removal from plastic parts without having them break or damaged during assembly. It also saves money by reducing the size of the part being made up but still maintain its strength when joined together properly. Additionally, it simplifies the process of making these types of products while keeping their quality level high enough at competitive prices. Overall, this innovation makes production more efficient and less expensive than previous methods that had limitations such as slow down times due to hardening or damage caused by external factors like rainwater.

Problems solved by technology

This patented describes how making hollow metal structures with integrally formed shell members has become more efficient than previous methods due to their improved production speed compared to separate fabrication processes such as casting or machining. Additionally, there have been attempts at reducing material usage during these procedures without compromising its effectiveness over longer periods of time.

Method used

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  • Method for manufacturing integrally-molded composite hat stiffener
  • Method for manufacturing integrally-molded composite hat stiffener

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Embodiment Construction

[0015] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0016] Depend on figure 1 , figure 2 visible:

[0017] A method for integrally forming a hat rib of a composite material. include

[0018] In the metal mold, PMI (polymethacrylimide) foam 1 is evenly coated with a certain thickness of water-soluble mandrel 2;

[0019] The water-soluble mandrel is compacted by means of vacuum bag pressing;

[0020] Remove moisture in the core mold by heating in an oven, and finally obtain a mold with a water-soluble core mold covered with PMI foam;

[0021] according to figure 2 Laying the carbon fiber fabric prefabricated body 3 in a manner;

[0022] Using VARI (Vacuum Assisted Resin Infusion: Vacuum Assisted Resin Infusion) process for injection and curing;

[0023] Use clear water to wash away the water-soluble mandrel covered by PMI foam to obtain an integrally formed hat rib.

[0024] The invention c

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Abstract

The invention relates to a method for integrally molding a composite hat stiffener. The method is implemented through the following steps: coating PMI (polymethacrylimide) foam with a water-soluble core model to prepare a mold; preparing a perform on the mold; performing glue-injection and curing by the VARI (Vacuum Assisted Resin Infusion) process; and scouring the water-soluble core model, coating the PMI foam, with clear water to obtain the integrally-formed hat stiffener. The method has the following beneficial effects: in comparison with a traditional semi-closed die which is difficult to demold, quick demolding can be realized; and in comparison with all use of the water-soluble core model, the material cost can be lowered. Compared with a traditional mode that all parts are independently prepared and then bonded and riveted, the method for integrally molding the composite hat stiffener has the advantages that on the premise of meeting requirements on the overall performance, the structural weight is further reduced through reducing the number of fasteners, and the manufacturing cost and the assembling cost are lowered.

Description

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Claims

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Application Information

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Owner HENGSHEN
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