A thermal insulation charging integrated additive manufacturing method based on light curing technology, printing device and forming equipment

Abstract

The invention discloses a heat-insulating charge integrated additive manufacturing method based on light-curing technology, a printing device and a forming device, and belongs to the technical field of solid motor manufacturing. The invention proposes a heat-insulating charge integrated manufacturing method based on the light-curing technology. The thermal insulation layer is printed by multi-component synchronous feeding, the purpose of which is to construct a thermal insulation layer with a gradient structure. The thermal insulation layer of this structure has a high content of adhesive on the contact surface with the grain and the shell, which makes it have good interface bonding performance, and the middle layer has a high content of ablation-resistant filler, so that it has better ablation resistance as a whole. performance. Therefore, the process of the present invention can realize the synchronous manufacture of the charge column and the thermal insulation layer, without using the liner to realize the interface bonding between the propellant and the thermal insulation layer, which can effectively reduce the negative mass of the solid rocket motor and improve the performance of the solid rocket motor.

Description

technical field [0001] The invention belongs to the technical field of manufacturing solid rocket motors, and in particular relates to an integrated additive manufacturing method for heat-insulating charges based on light-curing technology, a printing device and a forming device. Background technique [0002] With the development of missile weapon technology, the charge design of solid rocket motor becomes more and more complex. The limitations and deficiencies of the traditional charge technology in the manufacture of solid rocket motors with complex charge structures mainly lie in two points: First, for the charge column with complex internal combustion surface structure, it is difficult to manufacture due to the limitation of the design and removal of the mandrel ; Second, the thermal insulation layer and the propellant are assembled by step-by-step forming to complete the charge, and the assembly surface is bonded by the lining layer, and the debonding of the interface c...

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Problems solved by technology

[0003] Aiming at the problem of poor process adaptability in the manufacture of complex charge structures in the prior art, the present invention discloses an integrated additive manufacturing method for adiabatic charge based on photocuring technology, a printing device and a forming device to solve the problem of complex structural solids The problem of poor suitability of charge manufacturing in the engine manufacturing process provides a new solution for the manufacture of solid engines

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