Lead free liner composition for shaped charges

F - Mech Eng,Light,Heat,Weapons – 42 – B

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F42B 1/02 (2006.01) B22F 1/00 (2006.01) C22C 1/04 (2006.01) F42B 1/028 (2006.01) F42B 1/032 (2006.01) F42B 12/00 (2006.01)

Patent

CA 2416616

A liner (5) for a shaped charge (1) formed from a mixture of powdered heavy metal and a powdered metal binder. The liner is formed by compression of the mixture into a liner body shape. In the preferred embodiment of the invention, the mixture comprises a range of 90 to 97 percent by weight of powdered heavy metal, and 10 to 3 percent by weight of the powdered metal binder. In a specific embodiment of the invention, a lubricant is intermixed with the powdered metal binder to aid in the formation of the shaped charge liner. The preferred powder heavy metal is tungsten, and the preferred powder metal binder is copper. The powdered metal binder can be comprised of other malleable ductile metals such as bismuth, zinc, tin, uranium, silver, gold, cobalt, zinc alloys, tin alloys, nickel, or palladium.

L'invention concerne un revêtement pour charge creuse formé d'un mélange d'une poudre de métal dense et d'une poudre de liant métallique. Le revêtement est formé par compression du mélange dans une forme de corps de revêtement. Dans la réalisation préférée de l'invention, le mélange comprend 90 à 97 pour cent en poids de poudre d'un métal dense et 10 à 3 pour cent en poids de poudre de liant métallique. Dans une réalisation spécifique, on mélange à la poudre de liant métallique un lubrifiant de façon à faciliter la formation du revêtement de charge creuse. Le tungstène constitue la poudre métallique dense préférée et le cuivre, la poudre de liant métallique préférée. La poudre de liant métallique peut comprendre d'autres métaux ductiles et malléables tels que bismuth, zinc, uranium, argent, or, antimoine, cobalt, alliages de zinc, alliages d'étain, nickel ou palladium.

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