Artillery projectile and method for producing an artillery projectile

Abstract

The subject of the application is an artillery projectile and a method of manufacturing it. The method of manufacturing an artillery projectile is characterized in that a thick-walled tube, which constitutes the cylindrical body (2) of the projectile (1) and the bottom (3) of the projectile (1), with an annular surface on its circumference corresponding to the annular surface of the body (2), are joined by a rotary friction welding process. The bottom (3), mounted in a spindle via an operating projection (6), is set in rotation at a speed in the range of 200 to 1000 rpm. Then, a non-rotating cylindrical body (2) of the projectile (1) is pushed against the rotating bottom (3), pressed against the bottom (3) by a force P of 30 to 100 MPa.After the pressed annular surfaces have been plasticized, the spindle is stopped abruptly, simultaneously increasing the pressure force P to a value of 120 to 200 MPa for a period of 20 to 40 seconds, after which the external flash (4) and the internal flash (5) are removed by cutting, the interior of the projectile (1) is turned to the final dimensions and the final shape of the projectile (1) is given.