Bullet propulsion ring and method for manufacturing same

Abstract

The invention relates to a bullet throw-out collar and its manufacture method. Bullet throw-out collar, internal void of which is impregnated with liquid lubricant, is formed by compressing and burning straight iron powder containing residual parts such as carbon, manganese, silicon, phosphor and sulfur. The invention comprises the following steps: mixing process, in which straight iron powder containing residual parts is added with granulous lubricant of certain proportion to get base metal; press forming process, in which base metal is compressed to get collar with certain diameter, thickness and magnitude and gaps of complex number; burning process, in which press-formed collar is burned in furnace under anaerobic condition to make straight iron powder condense and keep stable state; and impregnation process, in which burnt collars are soaked in liquid lubricant and liquid lubricant permeates into internal void.

Description

technical field [0001] The present invention relates to a propelling ring for bullets and its manufacturing method, and further relates to a propelling ring for bullets arranged on the outer periphery of bullets in order to prolong the shooting range of anti-aircraft guns and guns for killing people and horses, and its manufacturing method. Background technique [0002] In order to extend the range of the bullet and the hit rate of the target, a plurality of rows of spiral rifling are set on the inner peripheral surface of the barrel. Thus, after the bullet is fired from the magazine, it rotates and advances along the spiral rifling of the gun chamber at high speed. [0003] In this way, in guns, the bullets of anti-aircraft guns, machine guns, etc. are armor-piercing bullets, and the rear tail portion around them is provided with a propelling ring. [0004] When the bullet is fired, the propulsion ring plays the role of contacting the rifling of the gun bore, causing the b...

AI Technical Summary

Problems solved by technology

[0006] For the existing iron propulsion ring, the density after sintering does not exceed 5.0-6.0g / cm 3 , if it is a gun with a sharp helix angle of the rifling line, the friction force generated during high-speed rotation will cause the problem of the gun body breaking, so this kind of bullet is only used for guns with a relatively perfect helix angle kind

[0007] However, the helix angle of the rifling of the existing guns is generally relatively sharp. If one wants to have the advantages of an iron propulsion ring, a new gun with a relatively perfect helix angle must be manufactured, and the economic burden is relatively huge.