Many of the early gun bullet casings were made of copper-iron alloy and other materials and were made by manual hammering (equivalent to low-speed stamping). With the gradual development of metallurgical technology, there are now great changes depending on the amount of domestically produced metal in the country. Currently, cartridge cases are mostly made of copper-clad steel or low-carbon steel. The molding process is integral casting plus cutting technology. Different guns use different cartridge case lengths, inclinations, calibers, low grooves, and fire hole sizes.
A general bullet consists of four parts: projectile, cartridge, propellant, and flash cap. The projectile is used to penetrate the target by flying quickly. The cartridge is used to connect the projectile and protect the propellant and seal the gunpowder gas. The propellant burns to give the projectile a higher muzzle velocity, and the flash cap is used to fire the projectile. But this only refers to ordinary bullets. Other special bullets, testing bullets and auxiliary bullets are different, and the ingredients will also vary depending on the bullet.
Extended information:
A general bullet consists of four parts: projectile, cartridge, propellant and flash cap. The projectile is used to penetrate the target by flying quickly. The cartridge is used to connect the projectile and protect the propellant and seal the gunpowder gas. The propellant burns to give the projectile a higher muzzle velocity, and the flash cap is used to fire the projectile. But this only refers to ordinary bullets. Other special bullets, testing bullets and auxiliary bullets are different, and the ingredients will also vary depending on the bullet.
When fired, the firing pin ignites the flash cap (primer). The primer burns rapidly and ignites the propellant in the cartridge (cartridge). The propellant ignites instantly and simultaneously generates high temperature and high pressure, extruding the projectile (warhead) from the cartridge. At this time, the projectile is exposed to the high pressure generated by the propellant. When pushed, it moves forward, is squeezed by the rifling, causes rotation, and is finally pushed out of the cartridge chamber.
Baidu Encyclopedia-Bullets
Baidu Encyclopedia-Bullets