Forming method of solid rocket engine shell

Abstract

The invention discloses a forming method of a solid rocket engine shell, and belongs to the technical field of medium-sized solid rocket engines. The forming method comprises the steps that an engineshell is divided into a front joint, a rear joint, a front skirt body, a rear skirt body, a front slide block, a rear slide block, a front butterfly body, a rear butterfly body, a first cylinder bodypart and a second cylinder body part, then each part is welded and formed at the corresponding positions to make the engine shell, and wherein each part is made of C250 maraging steel. According to the forming method, the engine shell is made of the C250 maraging steel, the high-temperature heat treatment is avoided during specific preparation, and the shell shape and position tolerance accuracy is higher; and at the same time, the specific process comprises the processes of ellipsoid drawing forming, high-resistance maraging steel cylinder spinning forming and the like, the problem of drawingforming difficulty of the material is solved, and meanwhile the technical defect of low material utilization rate caused by adopting a traditional integral forging processing scheme is further avoided.

Description

technical field [0001] The invention relates to a processing method for a solid rocket motor combustion chamber casing, which belongs to the technical field of medium-sized solid rocket motors, in particular to a molding method for a solid rocket motor casing. Background technique [0002] The air-to-ground missile weapon system has developed rapidly in recent years, and it launches missiles from aircraft to attack ground (water) surface targets. It is one of the main equipments for the air force to carry out assaults in the hole, and it is equipped on aircraft such as strategic bombers, fighter bombers, attack aircraft, fighter planes, armed helicopters and anti-submarine patrol aircraft. Compared with aerial bombs, aerial rockets and other weapon systems, air-to-ground bombs have strong maneuverability and good concealment, and can be launched from outside the range of enemy air defense weapons, which can reduce the threat of ground air defense firepower to carrier aircraf...

AI Technical Summary

Problems solved by technology

Traditional ultra-high-strength steel such as D406A, 30Cr3 and other materials have become less and less satisfactory, mainly in the following aspects: First, the material strength level is about 1600MPa, resulting in thicker engine shell wall thickness and increased projectile weight; Second, ultra-high-strength steels such as D406A and 30Cr3 need to be quenched and strengthened by high-temperature heat treatment, and the thin-walled shell has large deformation, which affects the cooperation between the projectile body and the carrier

Images