A kind of solid rocket motor inner heat insulation layer and forming method thereof

Abstract

The invention relates to a solid rocket engine internal insulation layer and a forming method thereof. The internal insulation layer is prepared through the following steps: step 1, using a calendaring machine for grinding the green stock of the insulation layer into a rubber piece; step 2, wrapping a mold core with the rubber piece layer by layer to form an insulation sleeve; step 3, feeding the insulation sleeve into a vulcanizing tank for solidifying; step 4, taking out the vulcanized insulation sleeve, and cooling to room temperature; step 5, performing shaping and cutting on the insulation sleeve, and taking the insulation sleeve down from the mold core after the completion of shaping; step 6, uniformly brushing the outer surface of the insulation sleeve with an adhesive, and adhering the insulation sleeve onto the inner wall of the combustor casing of the solid rocket engine; and step 7, placing the combustor casing in the vulcanizing tank for solidifying to form the internal insulation layer. The solid rocket engine internal insulation layer and the forming method thereof have the benefits as follows: the dimension control precision of the insulation layer is higher, the quality coherence is good, the operation is simple, the production efficiency is high, not only the forming requirement of the insulation layer with a uniform thickness is met, but also the forming requirements of variable-thickness and irregular-shaped insulation sleeves with complex structures are met.

Description

technical field [0001] The invention relates to a forming process of a thermal protection material in the field of missile weapons and space vehicles, in particular, it can be used in the manufacture of a thermal insulation layer in a combustion chamber of a solid rocket motor. Background technique [0002] At present, the methods for manufacturing the inner insulation layer of solid rocket motor mainly include hot pressing forming and compression molding. The hot press forming process has the advantages of mature and stable technology and a wide range of applications, but the operation process is complicated, the production efficiency is low, and a large number of manual operations are relied on, which seriously hinders the rapid mass production of missile weapons. However, the compression molding process is limited by the size of the solid rocket motor and the structure of the thermal insulation layer. It is not suitable for the aluminum alloy material or the engine that i...

AI Technical Summary

Problems solved by technology

[0003] The modern combat environment has higher and higher requirements for the maneuverability of tactical missiles, which leads to a more complex structure of the thermal insulation layer. The traditional hot pressing and molding processes are difficult to meet the needs of development.

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