Inner heat insulation layer 3D printing system and method for solid rocket engine

Abstract

The invention relates to the field of manufacturing of solid rocket engine materials, in particular to an inner heat insulation layer 3D printing system and method for a solid rocket engine. The innerheat insulation layer 3D printing system comprises a printing head, a light curing device, a feeding device, a displacement amplifying mechanism and a control system. The printing head, the light curing device and the feeding device are arranged on the displacement amplifying mechanism. The control system is connected with the displacement amplifying mechanism and controls the movement of the displacement amplifying mechanism. The printing head comprises a piezoelectric driving device, a firing pin, an air pressure control device and a temperature control device. The feeding device comprisesan air compressor, an air pressure valve and a material storage cylinder. According to the inner heat insulation layer 3D printing system and method for the solid rocket engine, the production efficiency, the process stability and the key size control precision can be improved, and the problem that a traditional rocket engine inner heat insulation layer forming method is adopted is solved; automation and intelligent manufacturing are achieved, the production efficiency is greatly improved, the quality stability and consistency are improved, the defect rate is reduced, the high-reliability andeasy-guarantee requirements of the rocket engine are met.

Description

technical field [0001] The invention relates to the field of solid rocket motor material manufacturing, in particular to a 3D printing system and method for an inner thermal insulation layer of a solid rocket motor. Background technique [0002] The inner heat insulation layer of the solid rocket motor is a thermal protection material located between the inner surface of the combustion chamber shell and the powder column. Its main function is to take away a large amount of heat through its own continuous decomposition, carbonization and ablation, and to resist ablation of the high temperature of the gas. and heat insulation to prevent the shell from reaching a temperature that endangers its structural integrity and ensure the normal operation of the engine. During the manufacturing and processing of the inner insulation layer of the solid rocket motor using the traditional manual laying process, various forms such as interface debonding, lack of glue, cracks, impurities, tra...

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Problems solved by technology

[0005] The invention provides a 3D printing system and method for the inner heat insulation layer of a solid rocket motor, which improves production efficiency, process stability and accuracy of key dimensions, solves the problem of traditional rocket motor inner heat insulation layer forming, realizes automation and intelligent manufacturing, and greatly improves production Efficiency, improving quality stability and consistency, reducing defect rate, and adapting to the high reliability and easy maintenance requirements of rocket engines

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