Curing formation device and method for composite material with operating temperature of more than 500 DEG C

Abstract

The invention discloses a curing formation device and a curing formation method for a composite material with the operating temperature of more than 500 DEG C. The device comprises a high-pressure gas tank, a control system, a high-temperature resisting tank, an electric heating pipe, a vacuum bag, a gas suction pipe, a thermocouple signal wire, a thermocouple, a vacuum pump and a high-pressure gas boosting pump. The method comprises the following steps of: arranging the vacuum bag filled with a composite material blank into a tank main body of the high-temperature resisting tank, and positioning; introducing magnesium oxide powder into the tank main body of the high-temperature resisting tank; placing the high-temperature resisting tank into the high-pressure gas tank, and closing the high-pressure gas tank; controlling the electric heating pipe to be electrified through a main control circuit, so that the temperature of the composite material blank is raised to be between 500 and 600 DEG C; and adjusting pressure to be between 10 and 20MPa, so that the composite material blank is cured and formed at the temperature under the pressure. The device has a simple structure; the pressure is controlled through the high-pressure gas tank; the temperature is controlled through the electric heating pipe; and the temperature and the pressure are adjusted independently.

Description

technical field [0001] The invention relates to a composite material curing forming device and method, in particular to a composite material curing forming device and method with an operating temperature exceeding 500°C. Background technique [0002] The current method of producing high-quality composite materials is mainly the autoclave forming method. The advantages of the autoclave forming method are: uniform gas pressure, as long as the curing cycle, curing pressure, and curing temperature are within the limit range of the autoclave, it can adapt to the production of composite materials of different materials and shapes. However, the disadvantages of the autoclave forming method are also obvious: (1) As a high-temperature and high-pressure pressure vessel, the manufacturing cost of the autoclave is high. (2) The temperature and pressure of the gas in the autoclave change slowly, and the control accuracy is poor, and the temperature and pressure changes of the gas affect...

AI Technical Summary

Problems solved by technology

However, the disadvantages of the autoclave forming method are also obvious: (1) As a high-temperature and high-pressure pressure vessel, the manufacturing cost of the autoclave is high

(2) The temperature and pressure of the gas in the autoclave change slowly, the control accuracy is poor, and the temperature and pressure changes of the gas affect each other, making the control difficult

(3) In order to ensure the uniform temperature of the gas in the autoclave, a blast system working under high temperature and high pressure is required, which makes the internal structure of the autoclave complex

[0003] Moreover, the autoclave is not suitable for use at very high temperatures. If the working temperature exceeds 500 ° C, due to the rapid evaporation of water and the corrosion of equipment, water is not suitable as a coolant, and liquid nitrogen must be used as a coolant.

However, large autoclaves need to consume 600gal of liquid nitrogen per minute, which has exceeded the production capacity of liquid nitrogen equipment

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