Method for realizing co-curing of L-shaped reinforcing rib and C-shaped frame-structure composite part through high-strength soft tool

A high-strength, ribbed technology, applied in the field of high-performance carbon fiber composite structural parts manufacturing, can solve the problems of material stress accumulation, increased manufacturing cycle, and reduced production efficiency, and achieve uniform and accurate pressure, high manufacturing success rate, and short production cycle. short effect

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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0015] The whole process requires 2-3 times of autoclave, and each time it needs to be heated to the corresponding curing temperature, the manufacturing cycle increases, the production cost increases, and the production efficiency decreases;
[0016] Parts enter the tank many times, due to heat accumulation, it will cause internal stress accumulation of the material, molecular chain breakage, material aging and other problems

Method used

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  • Method for realizing co-curing of L-shaped reinforcing rib and C-shaped frame-structure composite part through high-strength soft tool
  • Method for realizing co-curing of L-shaped reinforcing rib and C-shaped frame-structure composite part through high-strength soft tool
  • Method for realizing co-curing of L-shaped reinforcing rib and C-shaped frame-structure composite part through high-strength soft tool

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Experimental program
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Effect test

Embodiment 1

[0036] A kind of high-strength soft tooling realizes the method for co-curing of L-shaped reinforcing ribs and C-shaped frame structure composite parts, comprising the following steps:

[0037] Step 1: Mold making, through the method of mechanical manufacturing, process two sets of metal forming molds with the same size as the left and right sides of the composite material parts, such as figure 1 and 2 The left metal mold and the right metal mold shown and as image 3 A set of C-shaped metal forming molds completely consistent with the inner surface of the C-shaped web of the workpiece is shown, and three sets of metal mold ends are equipped with corresponding drilling templates for drilling after curing;

[0038] Step 2: Lay a layer of rubber on the left and right metal forming molds respectively. After the first layer of rubber is paved, continue to pave two layers of carbon fiber prepreg or glass fiber prepreg on the rubber layer as a reinforcement layer;

[0039] Step 3:...

Embodiment 2

[0043] A kind of high-strength soft tooling realizes the method for co-curing of L-shaped reinforcing ribs and C-shaped frame structure composite parts, comprising the following steps:

[0044]Step 1: Mold making, through mechanical manufacturing, process two sets of metal forming molds with the same size as the left and right sides of the composite material parts, such as figure 1 and 2 The left metal mold and the right metal mold shown and as image 3 A set of C-shaped metal forming molds completely consistent with the inner surface of the C-shaped web of the workpiece is shown, and three sets of metal mold ends are equipped with corresponding drilling templates for drilling after curing;

[0045] Step 2: Lay a layer of rubber on the left and right metal forming molds respectively. After the first layer of rubber is paved, continue to pave 10 layers of carbon fiber prepreg or glass fiber prepreg on the rubber layer as a reinforcement layer;

[0046] Step 3: Seal the vacuum...

Embodiment 3

[0050] A kind of high-strength soft tooling realizes the method for co-curing of L-shaped reinforcing ribs and C-shaped frame structure composite parts, comprising the following steps:

[0051] Step 1: Mold making, through mechanical manufacturing, process two sets of metal forming molds with the same size as the left and right sides of the composite material parts, such as figure 1 and 2 The left metal mold and the right metal mold shown and as image 3 A set of C-shaped metal forming molds completely consistent with the inner surface of the C-shaped web of the workpiece is shown, and three sets of metal mold ends are equipped with corresponding drilling templates for drilling after curing;

[0052] Step 2: Lay a layer of rubber on the left and right metal forming molds respectively. After the first layer of rubber is paved, continue to pave 5 layers of carbon fiber prepreg or glass fiber prepreg on the rubber layer as a reinforcement layer;

[0053] Step 3: Seal the vacuum...

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Abstract

The invention provides a method for realizing co-curing of an L-shaped reinforcing rib and a C-shaped frame-structure composite part through a high-strength soft tool. The method has the beneficial technical effects that first, co-curing of the L-shaped reinforcing rib and the C-shaped frame-structure composite part is achieved through the cooperation of a soft mold and a metal forming tool, it isguaranteed that the key parameters, such as the profile tolerance, thickness and the L-shaped axis, of the part all meet the high civil aviation manufacturing standard, and the problem of aging caused by repeated curing of materials is solved; second, in the forming process, pressure is uniformly and accurately applied to all positions of the L-shaped vertical rib and a C-shaped frame, and the temperature rise rates of all the portions of the part are kept consistent, so that the problem that the thickness of an R-angle area of the part is out of tolerance is solved; and third, non-cured preforms of the L-shaped vertical rib and a C-shaped web are combined through the soft tool, so that internal stress caused by combination after curing of an assembly is avoided, and the problems of out-of-tolerance profiles and internal non-destructive defects caused by forced assembly in the prior art are solved.

Description

technical field [0001] The invention relates to the technical field of advanced composite material manufacturing, in particular to the manufacture of high-performance carbon fiber composite structural parts in aircraft, spacecraft and automobile industries. Background technique [0002] Resin-based carbon fiber composite materials have superior properties such as specific strength and specific stiffness, strong designability, good fatigue fracture resistance, corrosion resistance, and good dimensional stability. They are currently widely used in aviation, aerospace, transportation and other fields. High-performance structural materials. Among various carbon fiber composite molding processes, the autoclave process has uniform molding temperature and pressure, and has good adaptability to parts of different materials, shapes, sizes and structures. One of the main process methods of material components. [0003] The C-shaped frame structure with L-shaped ribs is a relatively ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/34B29C70/44B29C70/54
CPCB29C70/342B29C70/345B29C70/44B29C70/543
Inventor 马秀菊宋宏翔郭渊任嘉慧基亚成曹习飞黎玉钦华文龙任慧敏
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