C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
C22C 21/00 (2006.01) C22C 21/08 (2006.01) C22C 21/12 (2006.01)
Patent
CA 2202857
Free-machining aluminum alloys are disclosed containing effective amounts of tin and indium. The tin and indium additions are especially adapted for use as free-machining constituents in aluminum alloys, such as AA2000 and AA6000 series aluminum alloys. The additions can be used in place of bismuth and lead in currently available free machining alloys. In alloys containing bismuth and tin, the indium can be used to replace the bismuth. A method of producing a free-machining aluminum alloy product also is described.
L'invention concerne des alliages d'aluminium facilement usinables contenant des doses utiles d'étain et d'indium. L'adjonction de ces matériaux, particulièrement appropriés en tant que composants assurant une meilleure faculté d'usinage à des alliages d'aluminium, tels que les alliages des séries AA2000 et AA6000, peut, en outre, remplacer celle de bismuth et de plomb, dans des alliages facilement usinables actuellement à disposition. S'agissant d'alliages contenant du bismuth et du plomb, il est possible d'utiliser l'indium à la place du bismuth. Une méthode de fabrication de produit constitué d'alliage d'aluminium facilement usinable est également décrite.
Perley-Robertson Hill & Mcdougall Llp
Reynolds Metals Company
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