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CFRP hole making quality control method

A quality control method and glass cloth technology, applied in the field of mechanical hole making, can solve problems such as fiber bending and fracture, fiber tearing, etc., and achieve the effects of avoiding damage, avoiding potential corrosion, and improving the quality of hole making

Inactive Publication Date: 2020-07-17
CHENGDU AIRCRAFT INDUSTRY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] 3. During the hole-making process, the fiber is squeezed to cause bending and fracture, forming fiber tearing

Method used

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  • CFRP hole making quality control method
  • CFRP hole making quality control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A method for quality control of CFRP hole making, such as figure 1 , figure 2 ,in figure 1 is the flow chart of this program, figure 2 It is a schematic diagram of molding before high-temperature curing of this scheme, which mainly includes the following steps in sequence,

[0042] S1: Sheet cutting: Two-dimensionally expand the surface to be processed in the 3D model processing software to form the blanking NC code, and use the automatic blanking machine to cut the glass cloth prepreg and CFRP prepreg;

[0043] S2: laying the first layer of glass cloth prepreg: laying the cut glass cloth prepreg on the part forming mold;

[0044] S3: laying CFRP prepreg: the cut CFRP prepreg is matured according to the angle and layup required by the design, and the laying is completed on the glass cloth prepreg laid in step S2;

[0045] S4: laying the last layer of glass cloth prepreg: laying the cut glass cloth prepreg on the CFRP prepreg;

[0046]S5: Place auxiliary materials...

Embodiment 2

[0053] A method for quality control of CFRP hole making, such as figure 1 , figure 2 ,in figure 1 is the flow chart of this program, figure 2 It is a schematic diagram of molding before high-temperature curing of this scheme, which mainly includes the following steps in sequence,

[0054] S1: Sheet cutting: Two-dimensionally expand the surface to be processed in the CATIA 3D model processing software to form the blanking NC code, and use the automatic blanking machine to process the EW-100 / QY9611 glass cloth prepreg and CFRP prepreg to crop;

[0055] S2: Lay the first layer of glass cloth prepreg: Lay the cut EW-100 / QY9611 glass cloth prepreg on the part forming mold, lay one layer, the thickness is 0.1mm;

[0056] S3: laying CFRP prepreg: the cut CFRP prepreg is matured according to the angle and layup required by the design, and the laying is completed on the glass cloth prepreg laid in step S2;

[0057] S4: Lay the last layer of glass cloth prepreg: Lay the cut EW-10...

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Abstract

The invention relates to the field of mechanical hole making, in particular to a CFRP hole making quality control method. During CFRP part laying and overlapping, a layer of glass cloth prepreg is pre-laid on the surface and the bottom face of a part, and the glass cloth prepreg and CFRP prepreg are cured together; and the interlaminar binding force of an inlet layer and an outlet layer of a CFRPpart hole is improved through glass fibers, layering, burrs, fiber tearing and other hole making defects are restrained, and therefore the hole making quality is improved. The problems that the CFRP part is formed by laying and overlapping multiple layers of CFRP prepreg, the binding force between the layers is weak, layering defects and burrs are likely to be generated during hole making, bendingand breaking are generated due to extruding, and fiber tearing is formed are solved, potential corrosion, caused by the potential difference, between a CFRP material and an aluminum alloy and other metal materials can be effectively avoided, and the damage caused by the potential corrosion phenomenon to the CFRP material is avoided.

Description

technical field [0001] The invention relates to the field of mechanical hole making, in particular to a method for controlling the quality of CFRP hole making. Background technique [0002] CFRP, or Carbon Fiber Reinforced Resin Matrix Composite, is a lightweight, strong material that is widely used in the manufacture of many products that we use in our daily lives, unlike others that use traditional fibers such as glass fibers or aramid fibers, etc. The excellent properties of FRP composite materials, CFRP composite materials include: [0003] Lightweight - Traditional glass fiber reinforced composites use continuous glass fibers with a content of 70% (weight glass / total weight) and a density of typically 0.065 pounds per cubic inch; [0004] High strength——Although CFRP composites are light in weight, CFRP composites have higher strength and greater hardness per unit weight than glass fiber composites. Compared with metal materials, this advantage is more prominent. For ...

Claims

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Application Information

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IPC IPC(8): B29C70/34B29C70/54
CPCB29C70/342B29C70/54
Inventor 周欣康胡晨晨周大杨超
Owner CHENGDU AIRCRAFT INDUSTRY GROUP