Explosive compression molding method for improving charging density and density uniformity of special-shaped projectile body

Abstract

The invention discloses an explosive compression molding method for improving charging density and density uniformity of a special-shaped projectile body. An adopted explosive compression molding system comprises an automatic feeding part, a compression molding part and a projectile body fixing and rotating part. According to the process method, an eccentric punch is adopted, the diameter of the rod part of the punch is smaller than the internal diameter of a die, the eccentric punch moves eccentrically after going deep into the special-shaped die, the actual powder pressing radius of a pressure head is changed by utilizing the eccentric movement of the punch and the projectile body rotation, the actual contact area of the punch and powder is increased, and the purposes of improving the explosive loading capacity and reducing the density difference are achieved by stratification and batch compression. The technology is at the leading level at home and abroad, and is suitable for high-quality compression molding of explosive molding powder or filling of projectile bodies with special-shaped structures.

Description

technical field [0001] The invention relates to a compression molding process, in particular to an explosive compression molding method for improving the charging density and density uniformity of a special-shaped projectile, which is suitable for high-quality compression molding of a press-packed mixed explosive molding powder in a special-shaped projectile. Background technique [0002] The charge density distribution of the projectile is one of the key indicators of the charge quality. Increasing the charge density around the projectile and reducing the density difference with the center charge density can increase the charge amount, thereby improving the lethal power of the ammunition; , reduce the density difference, help to improve the firing safety of the ammunition in the firing process, thereby improving the comprehensive performance of the ammunition. [0003] For the warhead with a regular filling structure of the press-packed mixed explosive, according to the dia...

AI Technical Summary

Problems solved by technology

The common feature of the above two processes is that due to the limitation of the diameter of the mouth of the projectile, the punch can only exert pressure on the center of the powder during pressing, and the periphery is basically formed by extrusion, resulting in poor density uniformity and poor powder charge. low density

After the 155mm anti-explosive bomb is filled with press-packed mixed explosives, the maximum radial density difference can reach about 8%, which seriously affects the filling quality of the whole bomb

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