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Secondary bonding forming method of structural part with curvature

A technology for secondary bonding and structural parts, which is applied in the field of secondary bonding and molding of structural parts with curvature, can solve the problems of poor product quality stability and prone to dents in seams, so as to improve product stability and reduce product The effect of weight

Inactive Publication Date: 2013-07-10
HARBIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] This method leads to poor product quality stability, and the joints are prone to dent defects after the product is formed.

Method used

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  • Secondary bonding forming method of structural part with curvature
  • Secondary bonding forming method of structural part with curvature

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Embodiment Construction

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings. see figure 1 , figure 1 Structural diagram of glued parts. 1 is the cured expansion film, 2 is the inner skin, 3 is the cured expansion film, 4 is the honeycomb, and 5 is the outer skin.

[0029] join figure 2 , figure 2 It is the secondary bonding structure diagram of the bonding parts. 6 and 7 are glued parts, 8 and 9 are cured expansion film, and 10 is the J-94 expansion film added when the secondary glue joint is closed.

[0030] 1) Forming of each glued component

[0031] Surface treatment of inner and outer skins (aluminum) 2 and 5: chromic acid anodizing treatment for inner and outer skins (aluminum) 2 and 5, spraying J on the inner and outer skins (aluminum) -100 primer.

[0032] Adhesive assembly: ① Lay the outer skin 5 on the metal forming tool first, ② Lay the high-temperature curing structural adhesive film J-99B on the outer skin 5, ③ Lay...

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Abstract

The invention belongs to the technical field of structural bonded assembly forming, and relates to a secondary bonding forming method of a structural part with curvature. According to the invention, various assemblies are connected without adopting a riveting mode, and various bonded assemblies are integrally formed after being subjected to secondary curing and bonded through the curing of an expanded adhesive film J-99B; and the problem that a butt seam is easy to recess in the pressurizing and curing process of a product is solved through a butt seam unilateral beehive balance discharge process method, so that the product weight is reduced, and the product stability is enhanced.

Description

technical field [0001] The invention belongs to the molding technology of aircraft structure glue joints, and relates to a secondary glue joint molding method of structural parts with curvature. Background technique [0002] The structural glued tail beam is a large curvature and variable curvature structure formed by the butt joint of three wall panels. The manufacturing process is to seal the metal inner and outer skins, honeycomb sandwich structure, and adhesive film on the mold with a vacuum bag, place them in an autoclave, and in a vacuum (or non-vacuum) state, heat up → pressurize → heat preservation (medium temperature or high temperature) → decompression and decompression process to make it into the required shape and quality state. [0003] At present, the process methods for connecting structural parts with curvature on the aircraft include: [0004] 1. Riveting connection method [0005] First, each component of the large-curvature structural adhesive joint is ...

Claims

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Application Information

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IPC IPC(8): B29C65/02B29C65/48
Inventor 岳云江康健陈慧鹏
Owner HARBIN
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