Technology of Compensating Pad for Composite Composite Mandrel

A technology of composite materials and compensation pads, which is applied in the field of combined curing technology of composite materials, can solve the problems of unqualified non-destructive testing, bonding, parts debonding, etc., and achieve the effect of complete contact, simple process method, and easy bonding

Active Publication Date: 2014-10-15
SHENYANG AIRCRAFT CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The combined mandrel material is usually made of metal, so in the process of use, due to the high rigidity of the metal mandrel and the baffle, there are often problems with the fit, resulting in debonding and other bonding problems between parts. Gluing problems of the leather lead to non-destructive testing failure

Method used

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  • Technology of Compensating Pad for Composite Composite Mandrel
  • Technology of Compensating Pad for Composite Composite Mandrel
  • Technology of Compensating Pad for Composite Composite Mandrel

Examples

Experimental program
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Embodiment Construction

[0019] Such as figure 1 As shown, the part is composed of skin 1, pad 2 and baffle 4, and skin 1 is glued to pad 2 and baffle 4 respectively. 1. The bonding quality of pad 2 and skin 1 has a great influence on subsequent assembly.

[0020] Composite mandrel compensating pad technology of the present invention still adopts combined mandrel 3 to be positioned in baffle plate 4, and the part of combined mandrel 3 protruding outside baffle plate 4 is placed on its surface pad 2, and skin 1 covers pad 2 , The composite mandrel 3 and the baffle 4 are covered inside, and the skin 1, the pad 2 and the baffle 4 are glued into one body through external curing pressure and thermal expansion. Reserve the position of the rubber compensation pad 6 on the composite core mold 3, that is, reserve the thickness of the rubber compensation pad on both sides of the composite core mold 3 by reducing the size, and then bond the rubber compensation pad 6 to the composite core mold 3 reserved positi...

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Abstract

The invention provides a composite material combined core mold compensation pad process. A combined core mold is positioned in a baffle; pad strips are placed on the surface of the part, extending out of the baffle, of the combined core mold; the pad strips, the combined core mold and the baffle are covered by skin; the skin, the pad strips and the baffle are adhered into a whole through external solidification pressure and heating expansion; and the position of a rubber compensation pad is reserved on the combined core mold, namely the thickness of the rubber compensation pad is reserved on two sides of the combined core mold by reducing size and the rubber compensation pad is adhered to the reservation position of the combined core mold. By the composite material combined core mold compensation pad process, complete fitting of the cord mold and parts in the adhesion combined solidification process can be guaranteed, so that support to the baffle, the pad strips and the skin during adhesion is guaranteed, pressure is transferred uniformly and the adhesion quality is improved.

Description

technical field [0001] The invention relates to a combined curing process for composite materials, in particular to a combined curing process for positioning, supporting and uniformly transmitting pressure between parts of composite materials during the combined curing process, and belongs to the field of combined processes for composite materials. Background technique [0002] The trailing edge of the aircraft's horizontal tail contains a variety of composite material parts, such as skins, pads, ribs, root skins, honeycombs, rear edge strips, corner pieces, and skeletons. The above composite material parts need secondary bonding and curing. [0003] In the prior art, when the skin, skeleton and honeycomb are formed by secondary bonding and curing, the mandrel is used at the baffle to support the pressure during the curing process, so as to realize the comparison of the baffle, pad and skin. Good connection, the connection structure of the baffle, gasket and skin is as follo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/54B29C33/76
Inventor 姜洪博刘德礼
Owner SHENYANG AIRCRAFT CORP
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