Manual argon arc welding technology of TC4 titanium alloy shell;

The oval glass hall of Shanghai Science & Technology City consists of only aluminum-titanium-alloy grid-shell, which has pure installation system, and glass skin plates.

This paper discusses the reason and harm of incomplete penetration rounded welded root of titanium alloy cabin with lock bottom structure in air-to-air missile,and presents several solutions of this problem.

The paper briefly introduces the characters of warm extrusion and emphases on application advantages for parts of aluminum alloy shells and influencing factors on technological process.

The difficulty of aluminum alloy shell workpiece with empennages was analyzed during plasticity forming,and its forming process and die designing was introduced.

Normal penetration of a tungsten alloy shell into a concrete target was performed and the strain history of the critical section of the shell was obtained with the aid of an onboard recording system.

The mic rostructure of received shells was e xamined and analyzed,revealing that the formation of adiabatic shear band at critical section is the mainl y failure behavior of tungsten alloy shell,and matrix rupture at the tip o f internal hollow also results in the damage of the shell.