Speaking of helmets have to mention the "Jedi survival" this mobile game, which has a sublime defensive equipment - three levels of head, can be called the strongest protective helmet in the game, can defend a large part of the gun shot, so it is loved by players. The helmet was not invented. Its prototype is actually the former Soviet special Forces K6-3 titanium alloy bulletproof helmet.

The history of titanium alloy helmets in the Soviet Union can be traced back to the mid-to-late 1980s. The Soviet Union once equipped a heavy titanium alloy 6B6 helmet, its shape looks very strange, like a welder's mask, weighing 3.5 kilograms.

How to make a titanium helmet, today we will talk about.

Material preparation: ‌ High strength TB5 or TB8 titanium alloy sheet is used as raw material. ‌ These sheets have good deep drawing and cold drawing properties ‌ to meet the specific shape and size requirements of the helmet. According to the different uses of the helmet, different grades of titanium alloy helmet with thickness of 0.3~3.0mm were prepared. ‌ ‌

Anti-oxidation treatment: ‌ is coated with anti-oxidation coating on the surface of titanium alloy sheet, ‌ to prevent the sheet from being oxidized during processing, ‌ so as to protect the quality and performance of the sheet. ‌

Solution treatment: ‌ the coated titanium alloy sheet is treated with solution at a temperature above the phase change point, ‌, and then placed on the asbestos pad after cooling, ‌ to improve the processing performance of the sheet. ‌

Cold drawing: ‌ cut the solid solution treated titanium alloy sheet into a round plate shape, ‌ and coated with lubricant. ‌ then, ‌ is cold-drawn for two times to obtain the shell blank of the bulletproof helmet ‌. ‌ In the forming process, ‌ use the appropriate hydraulic pressure and tensile rate to ensure the quality and accuracy of the forming. The drawing of a die is lubricated with vegetable oil. The edge is fixed by 15MPa hydraulic pressure during forming. The drawing rate is 20mm/s and the forming depth is 110mm. The two-mode cold drawing deformation is large, the graphite milk is used for lubrication, and the edge is fixed by 20MPa hydraulic pressure during forming, the drawing rate is 10mm/s, and the forming depth is 180mm. ‌

Aging treatment: ‌ edge cutting treatment of the formed helmet shell, ‌ and then aging treatment, ‌ after air cooling to obtain the final titanium alloy bulletproof helmet. ‌ aging treatment is designed to further improve the strength and hardness of the helmet, ‌ to ensure its protective properties. ‌

Surface treatment: ‌ necessary surface treatment of helmet, such as ‌ grinding, ‌ spraying, ‌ to improve its appearance quality and durability. ‌

The helmet manufactured according to this process is an integrated titanium alloy structure, which can effectively reduce the weight of the helmet. At the same time, according to the importance of each part of the helmet and the probability of attack, the unequal weight die forging technology is used to thicke the important parts of the helmet, such as the front and top surface, and reduce the secondary parts, such as the side and back of the helmet, to improve the bullet-proof protection ability.