METHOD OF PRODUCTION OF PELLET POWDER Russian patent published in 2005 - IPC

FIELD: production of pellet powders for small-arms, for example for smooth-bore shot-firing guns.

SUBSTANCE: proposed method includes preparation of powder lacquer at mixing nitrocellulose ingredients in 4-5 mass parts of water with ethyl acetate, adding emulsifying agent, dispersing lacquer and removing solvent. Used as nitrocellulose ingredients are pyroxiline with ballistic powder or fine-grained pyroxiline powder with ballistic powder or all together: pyroxyline, fine-grained pyroxyline powder and ballistic powder at content of one of nitrocellulose ingredients not exceeding 30 mass-%. Emulsifying agent is added in the amount not exceeding 20-30 mass-% of total amount; dispersion of lacquer is continued for 10-20 min; then, process is discontinued for 10-20 min, after which dispersion is repeated and is continued for 10-20 min at introduction of remaining amount of emulsifying agent; hide glue is used as emulsifying agent. At content of one of nitrocellulose ingredients not exceeding 10 mass-%, dispersion cycle is repeated twice.

EFFECT: enhanced stability of ballistic characteristics of powder due to smooth distribution of components in volume.

2 cl, 1 tbl, 3 ex