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Moulding process of carbon fiber composite heavy-wall pipe

A composite material and molding process technology, used in tubular articles, other household appliances, household appliances, etc., can solve the problems of easy generation of voids, low fiber volume content, poor operating environment, etc., to expand the scope of application, low volatile content , the effect of improving the working environment

Inactive Publication Date: 2014-04-23
SICHUAN XIN WAN XING CARBON FIBER COMPOSITES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this process are: the resin content is not easy to control; the fiber volume content is generally low; it is easy to produce voids, and the product quality is difficult to control; the mechanical properties of the product are relatively low; the resin waste is serious and the operating environment is poor; The layer design is limited, and the maximum load-bearing capacity of the fiber cannot be exerted

Method used

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  • Moulding process of carbon fiber composite heavy-wall pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A forming process of a carbon fiber thick-walled pipe, comprising the following steps:

[0030] a. Prepare unidirectional carbon fiber prepreg, and cut the prepreg according to the length and thickness of the pipe;

[0031] b. Laying up: laying up the above-cut blanks, according to actual needs, using prepregs with different surface densities to adjust the distribution ratio of fibers in the directions of 0° and 90° through the laying process, so that the present invention can The thick-walled tube fibers produced by the provided molding process have a 0°, 90° orthogonal lay-up structure;

[0032] c. Rolling tube: iron the stacked blank on the mandrel coated with release agent, and then use a tube rolling machine to roll the tube. The temperature of the tube rolling platform is 15~40°C, and the pressure of the tube rolling is 0.2~0.6MPa , according to the length of the blank and the effective coiling stroke of the equipment, the same tube can be rolled repeatedly for s...

Embodiment 2

[0040]The carbon fiber composite thick-walled pipe prepared in Example 1 was used as the carrier of the self-floating logging tool. The prepared carbon fiber composite thick-walled pipe is used as the carrier of the logging tool (this is only to illustrate that the thick-walled pipe can be used as the carrier of the logging tool, no specific description is required), sent into the well, and the relevant data. The carbon fiber composite material thick-walled pipe provided in Example 1 is light in weight and can float quickly in the well, which can improve the timeliness and accuracy of well logging data. The present invention uses the thick-walled pipe produced by T700 grade carbon fiber epoxy resin prepreg, which has an inner diameter of φ37mm, an outer diameter of φ49mm, a length of 1200mm, and an external pressure resistance of more than 80MPa. The carbon fiber composite material thick-walled pipe produced by the molding process provided by the present invention When applie...

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Abstract

The invention provides a moulding process which uses carbon fiber prepregs to manufacture a heavy-wall pipe and belongs to the field of the moulding process of composite materials. The carbon fiber composite heavy-wall pipe is prepared through carrying out cutting, stacking, pipe reeling, band winding and solidifying on the carbon fiber prepregs. The moulding process can make the laying design of the pipe be unrestricted, the distribution amounts of the fibers in different directions can be precisely controlled, and the angles of the fibers can be designed. Environmental pollution is not caused during preparation, and later period processing is not needed after moulding. The prepared heavy-wall pipe has the advantages of light weight, low porosity, high fiber content and strong carrying capacity. The moulding process uses the Level T700 carbon fiber epoxy type prepregs to produce the heavy-wall pipe which can resist the external pressure of more than 80MPa, and the specification of the heavy-wall pipe is the inner diameter phi of 37 mm, the outer diameter phi of 49 mm, and the length of 1200 mm.

Description

technical field [0001] The invention belongs to the field of composite material molding technology, and in particular relates to a molding technology for making thick-walled pipes with carbon fiber prepreg as material. Background technique [0002] Traditional thick-walled pipes are rolled from steel plates, and thick-walled pipes can be divided into two types: cold-rolled thick-walled pipes and hot-rolled thick-walled pipes. Generally, the wall thickness of cold-rolled thick-walled coiled pipe is less than 20mm, and the outer diameter ranges from 450-3000mm. It is formed by direct rolling, welding, forming, butt jointing and rib removal of steel plates. Cold-rolled thick-walled coiled tube has the characteristics of short processing time, fast delivery and low cost. The wall thickness of the hot-rolled thick-walled coil generally exceeds 20mm, and the outer diameter ranges from 450-3000mm. It is rolled, welded, formed, ribbed, flaw-detected, and delivered in the state of ...

Claims

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Application Information

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IPC IPC(8): B29C70/32B29C70/54B29L23/00
CPCB29C70/32B29L2023/22
Inventor 马军石岩松刘智林李洪升李易红范云星
Owner SICHUAN XIN WAN XING CARBON FIBER COMPOSITES
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