Forming and repairing method for outer heat-proof layer of engine shell
A technology of engine casing and heat protection layer, which is applied in the coating, the device for coating liquid on the surface, the pretreatment surface, etc., can solve the problem of affecting the safety and reliability of missile flight and the mechanical properties of composite engine casings. and other problems, to achieve the effect of improving safety and reliability, good elongation, and simple operation
Inactive Publication Date: 2021-02-26
湖北三江航天江北机械工程有限公司
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Problems solved by technology
[0002] With the increase of the flight speed and distance of solid rocket motors, the aerodynamic heating of the engine shell is becoming more and more serious. If no appropriate external heat protection measures are taken, the aerodynamic heating and radiation heating , the high temperature will directly act on the composite engine casing, resulting in a decrease in the mechanical properties of the composite engine casing, which may further affect the safety and reliability of missile flight
Method used
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Embodiment
[0023] 1. Prepare
[0024] Preparation of 313 primer, WS-02 heat-resistant coating and M-01 topcoat;
[0025] The entire production process of the outer heat-proof layer is carried out in an environment with a temperature of 15-35°C and a relative humidity of ≤75%;
[0026] Prepare the samples, including 10 pieces of glass fiber shear sample bottom plates, 10 glass fiber tear-off sample bottom plates, 10 aluminum shear sample bottom plates, 10 aluminum tear-off sample bottom plates, and random anti-heat insulation sample bottom plates 4 pieces;
[0027] Use 120# gasoline to clean the shell spraying fixture tooling to ensure that there is no oil pollution on the surface of the shell spraying fixture tooling; in addition, after each spraying is completed and the tooling is removed, the paint on the tooling should be cleaned in time; after the cleaning work is completed, the Assembly of tooling
[0028] 2. Installation: install the sample in the random sample production area 2...
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Abstract
The invention discloses a forming and repairing method for an outer heat-proof layer of an engine shell. The forming and repairing method comprises the following steps of mounting, coating a cable boundary base coat, coating a cable boundary heat-proof coating, spraying the surface of a shell with a base coat, spraying the shell heat-proof coating, repairing a defective part and spraying a finishing coat. A heatproof layer formed on the outer surface of the prepared composite material shell is good in elongation, has certain strength and has good bonding performance with the composite materialshell, and the heatproof coating can protect the stability of the mechanical property of the composite material shell, so that the safety and reliability of missile flight are further improved. In addition, the production efficiency is high, and operation is simple and practical.
Description
technical field [0001] The invention belongs to the technical field of the heat-proof layer outside the engine casing, and in particular relates to a method for forming and repairing the heat-proof layer outside the engine casing. Background technique [0002] With the increase of the flight speed and distance of solid rocket motors, the aerodynamic heating of the engine shell is becoming more and more serious. If no appropriate external heat protection measures are taken, the aerodynamic heating and radiation heating , the high temperature will directly act on the composite engine casing, resulting in a decrease in the mechanical properties of the composite engine casing, which may further affect the safety and reliability of missile flight. [0003] Ablation heat protection is currently the most widely used form of heat protection. It mainly uses a combination of spraying and scraping to make the outer heat-resistant coating form a uniform layer of heat-resistant coating o...
Claims
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IPC IPC(8): B05D1/36B05D3/04B05D3/12B05D7/00
CPCB05D1/36B05D3/12B05D7/54B05D3/0406B05D2350/38
Inventor 杨志超张玉男高李帅马娟李忠仕刘朝晖
Owner 湖北三江航天江北机械工程有限公司