Mold for preparing reinforced structure of composite

A technology for composite materials and molds, which is applied in the field of molds for the preparation of composite material reinforced structures, to achieve the effects of easy disassembly, convenient operation, and improved production efficiency

Active Publication Date: 2018-11-13
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention is designed to provide a mold for the preparation of a composite material reinforced structure aimed at the above-mentioned state of the art. Production Challenges of Composite Reinforced Structures

Method used

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  • Mold for preparing reinforced structure of composite
  • Mold for preparing reinforced structure of composite
  • Mold for preparing reinforced structure of composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] See attached figure 2 As shown, the above-mentioned mold is used to prepare a ceramic matrix composite reinforced structure. The steps of forming and the method of using the mold are as follows:

[0030] Step 1. Use 45 to process the forming mold. The structure of the formed part is a flat plate reinforced structure. The angle of the matching surface of the processing rib and the slider is 25-50°. times.

[0031] Step 2: Cut and lay the SiC fiber prepreg according to the size requirements of the molding component, then place the prepreg in the compression molding mold, and install the left and right sliders and the core mold of the molding mold. Confirm the installation position of each module, and after ensuring that the installation is correct, install the mandrel bar and male mold;

[0032] Step 3. Place the mold on the press, set the temperature rise rate of the press to 2°C / min, raise the temperature to 300°C, set the pressure to 10Mpa, and keep the pressure for...

Embodiment 2

[0036] Using the above mold to prepare another ceramic matrix composite material reinforced structure, the forming steps and the method of using the mold are as follows:

[0037] Step 1. Use 3Cr2Mo to process the forming mold. The structure of the formed part is a flat plate reinforced structure. The angle of the matching surface of the processed rib and the slider is 30°~50°. 2 times.

[0038] Step 2: Cut and lay the SiC fiber prepreg according to the size requirements of the molding component, then place the prepreg in the compression molding mold, and install the left and right sliders and the core mold of the molding mold. Confirm the installation position of each module, and after ensuring that the installation is correct, install the mandrel bar and male mold;

[0039] Step 3. Place the mold on the press, set the temperature rise rate of the press to 2°C / min, raise the temperature to 350°C, set the pressure to 8Mpa, and keep the pressure for 6h;

[0040] Step 4. After ...

Embodiment 3

[0043] Using the above-mentioned mold to prepare yet another ceramic matrix composite reinforced structure, the forming steps and the method of using the mold are as follows:

[0044] Step 1. Use 3Cr2Mo to process the forming mold. The slider, female mold and male mold forming surfaces are all processed into arc shapes, which are used to prepare the reinforced structure of arc parts. The angle of the processed rib and the mating surface of the slider is 30-45° , The matching length of the male mold and the female mold slideway is 5 times the thickness of the component.

[0045] Step 2: Cut and lay the SiC fiber prepreg according to the size requirements of the molding component, then place the prepreg in the compression molding mold, and install the left and right sliders and the core mold of the molding mold. Confirm the installation position of each module, and after ensuring that the installation is correct, install the mandrel bar and male mold;

[0046] Step 3. Place the...

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Abstract

The invention provides a mold for preparing a reinforced structure of a composite. The mold comprises a male mold (1), a right sliding block (2), a female mold (3), core mold barrier strips (6), a fastening bolt (5), a core mold (7) and a left sliding block (8) and is characterized in that flanges (14) are arranged at the left side and right side of the female mold (3), and bevel vertical columns(10) are arranged at the four corners of the female mold (3) and are matched with slideways (17) at the four corners of the male mold; the matching surfaces of the left sliding block (8), the right sliding block (2) and the female mold (3) are at a certain angle; the core mold (7) is arranged between the two sliding blocks and is matched with the sliding blocks to form an internal cavity of a component (4); the female mold (3), the left sliding block (8), the right sliding block (2) and the core mold (7) form a molding space of the component (4); and the core mold barrier strips (6) are arranged at the two ends of the core mold (7). When a prepreg-infiltration technology is used for preparing the reinforced component of the CMC (ceramic matrix composite), the mold can be used for compression molding of a reinforced structure prefab and provides a blank for forming the reinforced component of the CMC.

Description

technical field [0001] The invention relates to a mold for preparing a composite material reinforced structure, which belongs to the field of composite material forming. Background technique [0002] The molding method of the composite reinforced wall panel structure is usually formed by autoclave. The process is to lay up the prepreg according to the shape and size requirements of the part, and seal it in the mold, and then cure it in the autoclave to prepare Reinforced structure. There is also a method of compression molding. When the composite material reinforced structure is molded, the complete reinforced structural member is prepared by curing each area in stages and finally co-curing. There are many studies on the forming of resin-based reinforced components, but ceramic matrix composites are relatively small in application scale, so there are few reports on the forming methods of reinforced structures of this material; the structure of typical ceramic matrix composi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C33/00B29C70/46B29C70/40
CPCB29C33/00B29C70/40B29C70/46
Inventor 姜卓钰杨金华吕晓旭周怡然刘虎焦春荣焦健
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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