Composite material propeller blade sheet molding and transition connection technical study

A technology of composite materials and molding process, which is applied to other household appliances, household appliances, household components, etc., can solve the problems of reduced propeller strength, high overall molding and winding costs, and difficulty in demoulding, so as to achieve smooth blade surface and enhanced strength , Transition uniform effect

Inactive Publication Date: 2017-07-21
武汉海威船舶与海洋工程科技有限公司 +1
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AI Technical Summary

Problems solved by technology

Shafting vibration of the propeller is likely to cause fatigue damage at the joint between the metal hub and the composite material, which reduces the strength of the entire composite propeller, thereby affecting the propulsion performance of the propeller; while the overall molding and winding costs are high, and the complex shape of the propeller , Difficult to demould

Method used

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  • Composite material propeller blade sheet molding and transition connection technical study

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Embodiment Construction

[0028] The specific technical solutions of the present invention are further described below with reference to the accompanying drawings, so that those skilled in the art can further understand the present invention, rather than constituting a limitation on their rights.

[0029] A kind of slice molding of composite material propeller blade comprises the following steps:

[0030] (1) Selection and processing of blade molds and materials:

[0031] (1.1) The blade mold is divided into an upper mold and a lower mold, and the material is metal;

[0032] (1.2) Before lamination, use water, ethanol, acetone and other solvents to wash off the dust, oil stains, organic matter and other impurities on the surface of the mold. After drying, apply a release agent or wax on the surface of the blade mold to evenly coat the gel coat resin. Spray on the surface of the mold, place it, and set it aside;

[0033] (1.3) Selection of reinforcement materials: choose fiber cloth and prepreg with e...

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Abstract

The invention relates to composite material propeller blade sheet molding and transition connection technical study. The technical study includes the following steps that (1) propeller blade sheet molding is carried out, wherein a paddle die and a reinforcing material are selected and treated, a plurality of layers of carbon fiber cloth is led out from the interiors of paddles in the paddle paving design process, and die assembly, pressurizing, heating, curing and aftertreatment re carried out after paddle paving is finished; and (2) paddle and paddle hub transition connection is carried out, wherein a fixing tool is used for fixing the multiple paddles, the paddles are subject to paving design, the carbon fiber cloth led out from the interiors of the paddles is paved inside the paddles, and the carbon fiber cloth led out from the interiors of the paddles and the propeller hub are subject to co-curing. The processes of sheet molding propeller blades and transition connection are adopted, the continuity of fibers inside the paddles and the paddle hub is guaranteed, the continuity of fibers on the inner wall of the paddle hub is guaranteed, the strength of the connecting position of the propeller blade and the propeller hub is improved, the process is simple, and the reliability is high.

Description

technical field [0001] The invention relates to a research on a manufacturing method of a composite material propeller blade, in particular to a research on a composite material propeller blade segmentation forming and transition connection process. Background technique [0002] For a long time, the propellers in our country are generally made of metal. Metal propellers have the disadvantages of being vulnerable to corrosion, cavitation damage, fatigue damage, and poor acoustic performance. Composite material propellers effectively solve these shortcomings of metal propellers. However, the existing composite material propellers are generally composed of composite material blades and metal propeller hubs, or composite material propellers are prepared by integral molding, winding and other processes. Shafting vibration of the propeller is likely to cause fatigue damage at the joint between the metal hub and the composite material, which reduces the strength of the entire comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/34B29L31/08
CPCB29C70/345B29L2031/087
Inventor 朱锡秦慧李永清王静南黄坤
Owner 武汉海威船舶与海洋工程科技有限公司
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