Bonding forming method for metal sealing head of large-opening composite material shell

Abstract

The invention discloses a bonding forming method for a metal sealing head of a large-opening composite material shell. The bonding molding method effectively solves the problem of low-pressure blasting of the metal sealing head of the large-opening shell, the bonding structure is reliable, the cost is low, the metal sealing head of the large-opening composite material shell can be connected without fasteners, the redundancy mass, the production cost and the material cost of an engine is reduced, and the drug loading space and the pressure bearing capacity of the shell is increased. According to the bonding forming method, the stability of the composite shell structure under the complex working load is guaranteed, the process route is relatively simple, and the bearing requirement of the shell to strength and rigidity can be met.

Description

technical field [0001] The invention relates to the technical field of solid rocket motor shells made of carbon fiber composite materials, in particular to a method for bonding and forming a large-opening metal head of a carbon fiber motor shell. Background technique [0002] Chinese patent "Manufacturing method of high temperature resistant fiber wound composite material shell", publication number CN 104354436 A, publication date 2015.02.18, discloses a manufacturing method of high temperature resistant fiber wound composite material shell. [0003] The carbon fiber composite engine casing has excellent performance, but the cost is high. In the traditional carbon fiber composite shell molding process, the shell section and the joint are solidified and molded at the same time, the process route is complicated and the quality batch is unstable, and additional reinforcement is required for the head part. Especially for large-opening head shells, the circumferential strain at ...

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Problems solved by technology

[0003] Carbon fiber composite engine casing has excellent performance, but the cost is high

In the traditional carbon fiber composite shell molding process, the shell section and the joint are solidified and molded at the same time, the process route is complex and the quality batch is unstable, and additional reinforcement is required for the head part

Especially for large-opening head shells, the circumferential strain at the edge of the pole hole is extremely large, and low-pressure explosions are prone to occur when the shell is subjected to internal pressure. The sudden release of huge strain energy will lead to the overall destruction of the head. The reinforcement process will inevitably increase the redundant quality and production cost of the shell

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