METHOD OF PRODUCING PELLET POWDER FOR SMALL ARMS Russian patent published in 2016 - IPC C06B21/00 C06B25/18 

FIELD: weapons and ammunition.

SUBSTANCE: invention relates to production of spherical powders for small arms. When producing powder dried graphitised pellet powder is fed via settling cyclone by pneumatic transport on inclined for dry screening, which is a set of replaceable brass screen under specified mark of powder, installed on a subframe at an angle of 20-30° relative to horizontal plane. Tray with screens is brought into movement with frequency of 100-120 vibrations per minute, from upper screen coarse fraction of pellet powder is collected, from tray is collected a fine fraction of powder and delivered for recycling, from middle screen is collected target fraction of pellet powder and directed into bag and equipping common batches.

EFFECT: higher stability of ballistic characteristics of pellet powder on bullet flight speed, bullet flight speed spread in series of shots, as well as on powder pressure in bore.

1 cl, 1 tbl, 5 ex, 1 dwg