Method for obtaining a linear detonating shaped cutting charge, charge obtained by said method
AssigneePyroalliance
InventorsAlex Chartier, Laurent D'Emmanuele, Olivier Jeanneau
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Abstract
The invention relates to a method for obtaining linear detonating shaped cutting charges (100) and to novel linear detonating shaped cutting charges (100) that are able to be obtained by means of said method. Characteristically, the sheath (101) of said charges (100) is shaped before filling and, once filled, it is only slightly deformed for perfect adaptation to the material contained therein. Ultimately, said sheath (101) has concave (C) outer walls (10a, 10b).
Claims15
A method for obtaining a linear detonating shaped cutting charge, said charge comprising a cylindrical metal sheath with chevron-shaped cross section enclosing an explosive energetic material, the method comprising:
- providing a hollow preformed metal container that extends from a first open distal end to a second open distal end, thereby defining a longitudinal axis, the hollow preformed metal container having a cylindrical form with a groove in the form of an inverted V along the longitudinal axis, a cross section of which has a chevron-shape and exhibits a symmetry relative to the median axis of said groove, and which comprises two inner walls delimiting said groove and two outer walls on either side of an apex of the chevron shape as viewed in cross-sectional side view;
- providing said container with an internal volume filled with a compression-deformable explosive energetic charge;
- and
- deforming said outer walls along the longitudinal axis so that each of the outer walls is concaved inwardly towards the respectively facing inner wall as viewed in cross-sectional side view, thereby reducing the filled internal volume of the container as compared to that of before the deformation of the outer walls so as to remove voids present in said filled internal volume without deformation of the inverted V groove,
- wherein the open distal ends are blocked before the outer walls are deformed.
Dependencies are inferred from the claim text.