Lead-free frangible bullets and process for making same

Details Lead-free frangible bullets and process for making same Lead-free frangible bullets and process for making same

B - Operations, Transporting

22

F

B22F 1/00 (2006.01) B22F 3/16 (2006.01) C22C 1/04 (2006.01) C22C 32/00 (2006.01) F42B 12/74 (2006.01) F42B 30/02 (2006.01)

Patent

CA 2231572

The invention relates to bullets having increased frangilibity (or which can be easily fragmented) and to materials and processes for the manufacture of such bullets. The bullets of the present invention are typically made from copper or copper alloy powders (including brass, bronze and dispersion strengthened copper) which are pressed and then sintered under conditions so as to obtain bullets with the desired level of frangibility. In preferred embodiments of the invention, the bullets also contain several additives that increase or decrease their frangibility.

L'invention concerne des balles présentant une meilleure aptitude à la désintégration (ou pouvant être fragmentées facilement) ainsi que des matériaux et des procédés de fabrication de ces balles. Les balles de la présente invention sont typiquement constituées de poudre de cuivre ou d'alliage de cuivre (y compris de cuivre renforcé par du laiton, du bronze et une dispersion) lesquelles sont comprimées et ensuite frittées dans des conditions permettant d'obtenir des balles ayant le niveau voulu d'aptitude de désintégration. Dans les modes de réalisation préférés de l'invention, les balles contiennent également plusieurs additifs augmentant ou réduisant leur aptitude à la désintégration.

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