METHOD OF PRODUCING SEPARABLE CASING OF SIGNAL AMMUNITION Russian patent published in 2009 - IPC F42B12/40 B21K21/06 

FIELD: ammunition.

SUBSTANCE: invention relates to ammunition to be fired from ship-based grenade-launcher systems. Proposed method comprises mechanical processing of hollow cylinder and bottom, fitting seal ring on the bottom outer surface at the point the bottom joint the cylinder via, for example magnetic-pulse squeezing. Note that prior to seal ring fitting, the cylinder and bottom surfaces in contact are mechanically hardened to form cold-work with the strain degree of 5 to 10 %. Antifreeze lubricant is applied onto bottom surface in contact with the cylinder. The cylinder and bottom are fitted on expanding mandrel to center their inner surfaces.

EFFECT: higher reliability, tightness and reduced play of mating parts.

1 ex, 5 dwg