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Forming method of cylindrical composite component

A composite material and molding method technology, applied in the field of composite material preparation technology, can solve the problems of high loss rate of prepreg, inability to perform partial winding, unstable layup quality, etc., and achieve molding rate and molding quality advantages and matching methods Reasonable and feasible, the effect of ensuring the compactness of the layer

Active Publication Date: 2018-12-14
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
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  • Abstract
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  • Application Information

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Problems solved by technology

The prepreg manual lay-up molding process has low lay-up angle accuracy, unstable lay-up quality, and low molding efficiency; the winding range is limited when forming a cylindrical structure by the fiber winding molding process, and local winding cannot be performed; the forming angle of the fiber winding molding process Restricted, small-angle winding cannot be carried out; the fiber winding molding process needs to be wound with a head, and there is fiber waste; the tape laying molding process has a high loss rate of prepreg when forming a large-angle (above 60°) layer, and forming a 90° ring Low efficiency when layering

Method used

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  • Forming method of cylindrical composite component
  • Forming method of cylindrical composite component
  • Forming method of cylindrical composite component

Examples

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Embodiment

[0060] A cylindrical member with a length of 7m, a radius of 2m, and a thickness of 18mm was formed using this molding process. The laying sequence of the first five layers of the cylindrical structure is [90 / 0 / 90 / 0 / 90]. The 90° layer adopts the winding forming method, and the width of the winding tape is d 1 =50mm, the actual winding angle is 89.5°, 0° uses the tape-laying forming method, and the width of the tape is d 2 =150mm, the winding tension at 90° is 9.2N / mm, 9N / mm, and 8.8N / mm, and the pressure of 0°lay-up is 19.8N and 19.4N. The molding cycle of the cylindrical member is 12 days, which is nearly half of the original manual molding cycle of 23 days.

[0061] Ultrasonic non-destructive testing method was used to test the entire cylinder of the formed cylindrical member. The test results showed that the whole member had no defects such as delamination, looseness, and pores. The member was partially sampled and made into a metallographic test. Metallographic observatio...

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Abstract

The invention relates to a forming method of a cylindrical composite component and belongs to the technical field of composite preparation technologies. Positive pressure is applied in a non-90-degree-layer automatic laying process to form forming pressure. The laying tape forming pressure and winding tension are both converted into forming pressure, coordinated control is performed according to the provided forming pressure, the winding tension and the laying tape pressure are adjusted according to requirements of the width of an actual prepreg tape, the total thickness of a laying layer, thediameter of a product and the like, so that the forming pressure is basically consistent, and the matching of the laying tape winding technology is realized.

Description

technical field [0001] The invention relates to a molding method of a composite material tubular member, belonging to the technical field of composite material preparation technology. Background technique [0002] There are mainly three molding processes for the existing composite material tubular structure, one is the manual lay-up molding process using prepreg materials, and the other is the fiber winding molding process. The other is the tape laying process. The prepreg manual lay-up molding process has low lay-up angle accuracy, unstable lay-up quality, and low molding efficiency; the winding range is limited when forming a cylindrical structure by the fiber winding molding process, and local winding cannot be performed; the forming angle of the fiber winding molding process Restricted, small-angle winding cannot be carried out; the fiber winding molding process needs to be wound with a head, and there is fiber waste; the tape laying molding process has a high loss rate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/30B29C70/38B29C70/54
CPCB29C70/30B29C70/386B29C70/54
Inventor 陈亮沈登雄王俊锋张建宝张蕾张来锁
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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