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Winding forming method for double-layer composite material of rotator

A winding molding and composite material technology, which is applied in the field of rotating body double-layer composite material winding molding and rotating body molding, can solve the problem of easy slippage of inner layer materials, and achieve the effect of improving the internal and external quality.

Inactive Publication Date: 2013-02-27
HUBEI SANJIANG AEROSPACE GRP HONGYANG ELECTROMECHANICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a double-layer composite material winding forming method for a rotating body, which solves the problem that the inner layer material is easy to slip in the existing double-layer composite material winding method, so as to improve the winding quality

Method used

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  • Winding forming method for double-layer composite material of rotator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1 of the present invention comprises the following steps:

[0024] 1. Preparation steps:

[0025] Prepare a metal mold. The metal mold is a rotating body, which is sequentially composed of an integral transition section, a profile, an extension section, a flange and a mandrel. The profile is consistent with the internal profile of the product to be formed, which is a truncated cone, θ is 25°; the transition section is cylindrical, and the extension section is spliced ​​by a truncated conical shape and a cylindrical shape; the material of the metal mold is alloy steel 30CrMnSiA, which meets the requirements of a temperature below 200°C and a pressure of 4 to 5MPa, and the use of 500 There is no deformation for more than one hour, and the total axial length of the metal mold surface and extension section is 200mm;

[0026] Dip the carbon fiber cloth and high silica fiber cloth into the same phenolic resin to prepare the inner layer prepreg cloth and the outer ...

Embodiment 2

[0030] Embodiment two of the present invention comprises the following steps:

[0031] 1. Preparation steps:

[0032] Prepare a metal mold. The metal mold is a rotating body, which is sequentially composed of an integral transition section, a profile, an extension section, a flange and a mandrel. The profile is consistent with the shape of the internal profile of the product to be formed, and is a curved surface of revolution, θ 26°~24°; the transition section is in the shape of a truncated cone, and the extension section is spliced ​​by a truncated cone and a cylinder; the material of the metal mold is 20# steel, which meets the requirements of a temperature below 200°C and a pressure of 4-5MPa , use for more than 500 hours without deformation, the total axial length of the metal mold surface and extension section is 1200mm;

[0033] Dip carbon fiber cloth and quartz fiber cloth into the same phenolic resin to prepare inner layer prepreg cloth and outer layer prepreg cloth; ...

Embodiment 3

[0037] Embodiment three of the present invention comprises the following steps:

[0038] 1. Preparation steps:

[0039] Prepare metal molds such as figure 1 As shown, the metal mold is a rotating body, which is sequentially composed of an integrated transition section 1, profile 2, extension section 3, flange 4 and mandrel 5, and the profile 2 is consistent with the shape of the inner profile of the product to be formed. It is a curved surface of revolution, θ is 26.1°~23.7°; the transition section 1 is cylindrical, and the extension section 3 is spliced ​​by frustum-shaped and cylindrical; the material of the metal mold is 20# steel, which meets the requirements of Below ℃, pressure 4~5MPa, use for more than 500 hours without deformation, the total axial length of the mold surface and extension section is 500mm;

[0040]Dip carbon fiber cloth and non-alkali glass fiber cloth into the same phenolic resin to prepare inner prepreg cloth and outer prepreg cloth; the thickness o...

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Abstract

The invention relates to a winding forming method for a double-layer composite material of a rotator, belongs to the forming field of composite materials, solves the problems that an inner layer material is easy to shift in a conventional winding method of the double-layer composite material, aims to increase winding quality, and is suitable for the formation of rotators with the inner molded surface in a truncated cone shape or a revolution surface. The method comprises a preparation step, a winding forming step, a curing step, a processing step and a product protection step. The winding forming method changes a winding forming sequence of a conventional double-layer composite material, and immediately winds a part of external layer external layer prepreg cloth after a part of internal layer prepreg cloth is winded, so that a trend of slipping outward of the internal prepreg cloth can be prevented in time, and internal and external quality of the double-layer composite material can be effectively improved.

Description

technical field [0001] The invention belongs to the field of composite material forming, and in particular relates to a double-layer composite material winding forming method for a rotating body, which is suitable for forming a rotating body whose inner surface is a truncated circular surface or a rotating curved surface. Background technique [0002] The sub-system parts of a certain type of product are hollow parts of rotating body, and the inner surface is truncated circular or curved surface of rotation. It is formed by double-layer composite material. The inner layer is anti-ablation, and the outer layer is for the purpose of heat insulation. Since two different types of prepregs are compositely wound and formed, there is a sequence of winding and forming of the inner and outer layer materials when the product is formed. When the existing double-layer composite material is wound and formed, the inner layer material is wound first and then the outer layer material is wo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/32
CPCB29C70/32B29C70/342
Inventor 李俊菊沈亚东罗海涛许剑马向阳
Owner HUBEI SANJIANG AEROSPACE GRP HONGYANG ELECTROMECHANICAL
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