| 摘要 |
<p>1287637 Moulding ammunition FABRIQUE NATIONALE HERSTAL 20 Nov 1969 [25 Nov 1968] 56846/69 Heading B5A [Also in Division F3] A process for the manufacture of a fragmentation element 4 for a grenade, comprises screwing a metal cup 14 upon a resisting core (not shown) conforming perfectly to the inner shape of the cup, introducing the resulting core into a mould (not shown), introducing hardened bodies such as steel balls 6 into the so conditioned mould and packing by means of vibrations, shakes or shocks, casting a synthetic resin for filling up all the interstices between the hardened bodies and the mould, and finally stripping off the mould. Thin ribs are provided in the bottom of the mould to keep the hardened bodies at a slight distance beneath the edge of the element. The resin is a polyamide, a superployamide or a cellulose ester.</p> |
