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Method for manufacturing enhanced thick-walled composite tube

The invention relates to a composite material pipe and a production method technology, which is applied in the field of reinforced thick-walled composite material pipe production, and can solve the problems of insufficient connection strength between layers, inability to meet requirements, delamination and the like.

Inactive Publication Date: 2014-12-03
MIANYANG TENGYANG ELECTROMECHANICAL PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the inconsistent pressure and tension during rolling, the internal stress cannot be eliminated, resulting in insufficient joint strength between layers, and problems such as local delamination and cracking are prone to occur after baking.
Unable to meet requirements when using

Method used

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  • Method for manufacturing enhanced thick-walled composite tube
  • Method for manufacturing enhanced thick-walled composite tube

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Experimental program
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Effect test

Embodiment 1

[0021] The invention provides a method for manufacturing a reinforced thick-walled composite material pipe, comprising the following steps:

[0022] Laying, preheating and hot pressing the multi-layer prepreg sheets to obtain a laminated composite material sheet having a thickness d;

[0023] According to the predetermined outer diameter R 1 Cylindrical profiles are cut out of said laminated composite sheet to obtain outer diameters R 1 A reinforced thick-walled composite tube blank, wherein, the R 1 <d, to ensure the size of the reinforced thick-walled composite tube blank;

[0024] The reinforced thick-walled composite material tube blank has a hole diameter R along its axis 2 The through-holes form the reinforced thick-walled composite tube, the cross-section of which is as figure 2 shown.

[0025] In the manufacturing method of the reinforced thick-walled composite material pipe, the prepreg sheet is made of three-layer prepreg with laying angles of 0°, 45° and 90° a...

Embodiment 2

[0034] The invention provides a method for manufacturing a reinforced thick-walled composite material pipe, comprising the following steps:

[0035] Laying, preheating and hot pressing the multi-layer prepreg sheets to obtain a laminated composite material sheet having a thickness d;

[0036] According to the predetermined outer diameter R 1 Cylindrical profiles are cut out of said laminated composite sheet to obtain outer diameters R 1 A reinforced thick-walled composite tube blank, wherein, the R 1 <d, to ensure the size of the reinforced thick-walled composite tube blank;

[0037] The reinforced thick-walled composite material tube blank is provided with a through hole with a diameter R2 along its axis to form the reinforced thick-walled composite material tube.

[0038] In the manufacturing method of the reinforced thick-walled composite material pipe, the prepreg sheet is made of three-layer prepreg with laying angles of 0°, 45° and 90° and is hot-pressed by an ultraso...

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Abstract

The invention provides a method for manufacturing an enhanced thick-walled composite tube. A traditional dry-process laminating and rolling method is changed into the laminating-cutting-punching three-step manufacturing method, and the problems of low interlaminar bond strength caused by inconsistent tension and pressure during rolling, layering, cracking and the like are solved. The manufacturing method is simple, the manufacturing time is short, and the manufactured enhanced thick-walled composite tube is free of a layering phenomenon and has excellent torsion resistance.

Description

technical field [0001] The invention belongs to the field of pipe production, in particular to a production method of reinforced thick-walled composite material pipe. Background technique [0002] Traditionally produced thick-walled composite material pipes are rolled by dry lamination and then baked at high temperature. figure 1 shown. Due to the inconsistent pressure and tension during rolling, the internal stress cannot be eliminated, resulting in insufficient joint strength between layers, and problems such as local delamination and cracking are prone to occur after baking. Unable to meet requirements when used. Contents of the invention [0003] In order to solve the above problems, the present invention provides a method for manufacturing a reinforced thick-walled composite pipe, comprising the following steps: [0004] Laying, preheating and hot pressing the multi-layer prepreg sheets to obtain a laminated composite material sheet having a thickness d; [0005] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B37/15B32B37/06B32B37/10B32B37/04
Inventor 张强于定福韩前龙
Owner MIANYANG TENGYANG ELECTROMECHANICAL PROD
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