SHAPED CHARGE AND METHOD OF ITS MANUFACTURE Russian patent published in 1998 - IPC

FIELD: petroleum and gas industries, applicable in shooting-through and blasting equipment. SUBSTANCE: the body accommodates the main charge and intermediate charge of plastic explosive pressed in the cover, both charges are separated by an inert lens. Width δ and thickness A in the zone of contact with the main charge, as well as thickness d_cqv≤Б<d_int;0,5d_cqv<A≤H;d_nb≤δ<0,04d_cov.z on the side of the intermediate charge lens, are selected according relations given in the description. The body accommodates the main charge and lens. The cover diameter exceeds the body diameter in the zone of arrangement of the intermediate charge, the cover is made of plastic material. Then the intermediate charge is pressed in the cover, and the latter is installed in the body with radial squeezing. EFFECT: enhanced efficiency. 2 cl, 4 dwg