Molten aluminum treatment

Details Molten aluminum treatment Molten aluminum treatment

C - Chemistry, Metallurgy

22

C

C22C 1/02 (2006.01) C22C 1/03 (2006.01)

Patent

CA 2306003

A method of grain refining aluminum, the method comprising providing a molten aluminum body (10) containing 1 to 3000 ppm titanium (13). A material (19) reactive with the titanium is introduced preferably in gaseous form to the aluminum body. The material has a component selected from the group consisting of boron, carbon, sulfur, nitrogen and phosphorus. The material and said titanium form a grain refining compound adapted for grain refining the aluminum.

Procédé de recuit d'affinage du grain destiné à l'aluminium, qui consiste à produire un corps d'aluminium fondu (10) contenant 1 à 3000 ppm de titane (13) et à y introduire un matériau (19) réagissant avec le titane, de préférence sous forme gazeuse. Ce matériau renferme un composant choisi dans le groupe comprenant le bore, le carbone, le soufre, l'azote et le phosphore. Il forme avec le titane un composé d'affinage du grain qui permet d'affiner le grain de l'aluminium.

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