초록 ▼

A method of providing a high-explosive projectile with desired areas of fragmentation includes the following steps: securing a steel plate component in a circumferentially extending recess in the outer surface of a projectile body; directing an energy beam to outer surface portions of the steel plat

A method of providing a high-explosive projectile with desired areas of fragmentation includes the following steps: securing a steel plate component in a circumferentially extending recess in the outer surface of a projectile body; directing an energy beam to outer surface portions of the steel plate component; heating, by the energy beam, narrow zones to a temperature above the melting temperature of the steel plate component to a predetermined depth thereof; and cooling the heated zones for effecting structural metallurgical changes in the steel plate component for obtaining the desired areas of fragmentation.

대표청구항 ▼

1. A method of providing a high-explosive projectile with desired areas of fragmentation, comprising the following steps: (a) securing a steel plate component in a circumferentially extending recess in an outer surface of a projectile body; (b) directing an energy beam to outer surface portions

1. A method of providing a high-explosive projectile with desired areas of fragmentation, comprising the following steps: (a) securing a steel plate component in a circumferentially extending recess in an outer surface of a projectile body; (b) directing an energy beam to outer surface portions of said steel plate component; (c) heating, by the energy beam, narrow zones of said steel plate component to a temperature above the melting temperature of the steel plate component to a predetermined depth thereof; and (d) cooling the heated zones for effecting structural metallurgical changes in the steel plate component for obtaining said desired areas of fragmentation. 2. The method as defined in claim 1, wherein step (a) comprises the step of securing two longitudinal half-tube steel plate parts, constituting said steel plate component, in said recess of the projectile body such that respective longitudinal edges of said longitudinal half-tube steel plate parts adjoin one another. 3. The method as defined in claim 2, wherein step (c) comprises the step of heating the adjoining longitudinal edges of said longitudinal half-tube steel plate parts such that said edges melt and overlap, whereby during step (c) the adjoining edges are welded to one another. 4. The method as defined in claim 1, wherein steps (b) and (c) are performed by a laser beam. 5. The method as defined in claim 1, wherein steps (b) and (c) are performed by an electron beam. 6. The method as defined in claim 1, wherein step (b) comprises the step of directing the energy beam to said steel plate component in a helical path. 7. The method as defined in claim 1, wherein step (b) comprises the step of directing the energy beam to said steel plate component in a plurality of crisscrossing helical paths. 8. The method as defined in claim 1, wherein said predetermined depth is at the most 75% of a wall thickness of said steel plate component.