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Autoclave Forming Method for Composite Material Intake Lip

A technology of autoclave molding and composite materials, which is applied in the field of autoclave molding of composite material inlet lip, can solve the problems of high porosity, poor and poor resin, and uneven surface, so as to improve thermal conductivity and reduce The effect of internal temperature difference and increasing constant temperature time

Active Publication Date: 2021-05-28
WEIHAI GUANGWEI COMPOSITES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the object of the present invention is to provide an autoclave molding method for composite material inlet lip, to solve the problems of irregular shape, large inclination angle products, poor and rich resin, high porosity, uneven surface, molding and other technologies question

Method used

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  • Autoclave Forming Method for Composite Material Intake Lip
  • Autoclave Forming Method for Composite Material Intake Lip
  • Autoclave Forming Method for Composite Material Intake Lip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] (1) Composite material layup:

[0080] 1) Mold preparation: use soft materials to wipe the mold cavity clean, and use liquid release agent to treat the surface of the mold for 6 times, with an interval of 10 minutes between each time;

[0081] 2) Cutting: Use an automatic cloth cutting machine to cut the glass fiber twill fabric prepreg with a protective film according to the size and shape required by the drawing, and pay attention to the type and fiber direction of the glass fiber twill fabric prepreg when cutting. Glass fiber twill fabric prepreg, the specification is 180g / m 2 , resin content 34%;

[0082] 3) Paving

[0083] ① Lower mold assembly: place the positioning boss 9 on the lower inner core 3 in the positioning groove 8 on the lower outer mold 1, and the bolts pass through the bolt holes 7 to fix the lower outer mold 1 and the lower inner core 3 together;

[0084] ② Lay glass fiber twill fabric prepregs of different sizes on the concave surface of the low...

Embodiment 2

[0100] (1) Composite material layup:

[0101] 1) Mold preparation: use soft materials to wipe the mold cavity clean, and use a liquid release agent to treat the surface of the mold for 5 times, with an interval of 15 minutes between each time;

[0102] 2) Cutting: Use an automatic cloth cutting machine to cut the carbon fiber plain weave fabric prepreg with a protective film according to the size and shape required by the drawing, and pay attention to the model and fiber direction of the carbon fiber plain weave fabric prepreg when cutting. Carbon fiber plain weave fabric prepreg, the specification is 200g / m 2 , the resin content is 40%;

[0103] 3) Paving

[0104] ① Lower mold assembly: place the positioning boss 9 on the lower inner core 3 in the positioning groove 8 on the lower outer mold 1, and the bolts pass through the bolt holes 7 to fix the lower outer mold 1 and the lower inner core 3 together;

[0105] ② Lay carbon fiber plain weave fabric prepregs of different s...

Embodiment 3

[0121] (1) Composite material layup:

[0122] 1) Mold preparation: use soft materials to wipe the mold cavity clean, and use liquid release agent to treat the surface of the mold for 4 times, with an interval of 30 minutes between each time;

[0123] 2) Cutting: Use an automatic cloth cutting machine to cut glass fiber twill fabric prepreg and carbon fiber plain weave fabric prepreg with protective film according to the size and shape required by the drawing, pay attention to the types of the two prepregs when cutting and fiber direction. Carbon fiber plain weave fabric prepreg, the specification is 200g / m 2 , resin content 40%, glass fiber twill fabric prepreg, specification 180g / m 2 , resin content 34%;

[0124] 3) Paving

[0125] ① Lower mold assembly: place the positioning boss 9 on the lower inner core 3 in the positioning groove 8 on the lower outer mold 1, and the bolts pass through the bolt holes 7 to fix the lower outer mold 1 and the lower inner core 3 together; ...

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Abstract

The invention discloses an autoclave molding method for composite material air inlet lip, the method comprises: S1, composite material paving; cutting fabric prepreg; assembling the lower inner core and the lower outer mold to obtain The lower mold, and fabric prepregs of different sizes are laid on the concave surface of the lower mold cavity in sequence; the upper inner core and upper outer mold are assembled on the lower mold, and fabric prepregs of different sizes are laid in turn On the concave surface of the entire mold cavity; S2, curing and molding; spread the isolation film and release cloth on the fabric prepreg laying area, and place the silicone soft mold modified by nanomaterials on the inner surface of the product, and finally put it into the air-permeable Put the felt into the vacuum bag; put the vacuum bag as a whole into the autoclave, connect the vacuum pipeline, evacuate and heat and solidify; S3, demoulding; separate the entire mold, and complete the demoulding of the product and the mold. The present invention can effectively solve the problems of irregular shape, large inclination angle product, rich and poor resin, high porosity, uneven surface, molding, etc., and ensures the appearance and dimensional accuracy of the product.

Description

technical field [0001] The invention belongs to the technical field of composite material forming, and in particular relates to a method for forming an autoclave lip of a composite material inlet port. Background technique [0002] The shape and surface of the air intake lip of the aircraft are complex, and currently it is mainly manufactured by the method of sheet metal stamping. The air intake lip needs to ensure the air flow and flow velocity, and has high requirements for the dimensional accuracy, internal and external surface quality, strength, stiffness and weight of the lip. [0003] As we all know, the control of quality and dimensional accuracy of composite products requires high-quality molds to achieve. For products with high lip dimensional accuracy, low porosity and high requirements for internal and external surface quality, a female mold and a male mold are required to jointly guarantee. However, for products with special-shaped cross-sections and large incl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/34B29C70/54
CPCB29C70/342B29C70/54
Inventor 隋显航杨佳成李光友
Owner WEIHAI GUANGWEI COMPOSITES
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