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Molten aluminum treatment

  • US 5,935,295 A
  • Filed: 06/03/1998
  • Issued: 08/10/1999
  • Est. Priority Date: 10/16/1997
  • Status: Expired due to Fees
First Claim
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1. An improved method for treating molten aluminum for solidifying into cast products wherein the molten aluminum is subject to a metal treatment for removing impurities, the improved method comprising forming grain refiner in the molten aluminum, the method comprising:

  • (a) providing a molten aluminum body;

    (b) providing 1 to 3000 ppm titanium in said molten aluminum body;

    (c) introducing to said molten aluminum body, a material reactive with said titanium, said material being in gaseous form at molten aluminum temperature and comprising at least one component of the group consisting of boron, sulfur, nitrogen and phosphorus, said material and said titanium forming grain refining nuclei in the aluminum body; and

    (d) solidifying at least a portion of said molten aluminum body into a grain refined, cast product.

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