ELONGATED CUMULATIVE CHARGE AND METHOD OF ITS PRODUCTION Russian patent published in 2019 - IPC F42B1/02 F42B1/36 

FIELD: blasting operations.

SUBSTANCE: invention relates to blasting, particularly, to explosive charges and can be used in dismantling of large-size engineering structures, as well as in liquidation of heavy military equipment and weapons. Device relates to composite elongated cumulative charges (ECC) and comprises charge of explosive 1, having the shape of strips of rectangular section of specified thickness and width, made of ductile explosive, lining 3 of cumulative recess made of thin heavy plastic material (for example, metal), layer of explosive adhesive composition 2 between explosive charge and lining and fasteners 4 for reliable attachment of ECC on cut surface at "focal" distance. ECC may additionally contain external strong shell 5 from thick heavy plastic structural material (for example, from metals or their alloys), the profile of which repeats the lining profile. Explosive glue composition is a solution of the same or another plastic explosive in a chlorine-containing derivative of lower alkanes. ECC manufacturing method consists in application of a uniform solid layer of previously prepared explosive adhesive composition, which is fixed on the cut structure of cumulative groove lining onto a clean defatted surface, dense bonding (without air gaps) to lining of strips cut out of plastic explosive weight, which is rolled into sheet, as required. Additionally, with the help of improvised means, an outer shell can be attached to the explosive charge from the back side of the ECC.

EFFECT: reduced cost of ECC and blasting operations as a whole, higher efficiency and manufacturability of charges.

5 cl, 2 dwg