ALUMINUM ALLOY MOLTEN METAL TREATMENT METHOD, TREATMENT DEVICE, METHOD FOR CASTING ALUMINUM ALLOY INGOT FOR FORGING, FORGED AND MOLDED PRODUCT, AND CASTING APPARATUS FOR ALUMINUM ALLOY INGOT

摘要

PROBLEM TO BE SOLVED: To provide an aluminum alloy molten metal treatment method for obtaining an aluminum alloy ingot in which the concentration of titanium (Ti) in aluminum alloy molten metal is reduced, further, the concentration of boron (B) is stabilized and the intrusion of TiB₂ particles is suppressed, and which comprises fine crystal particles.;SOLUTION: In the aluminum alloy molten metal treatment method, boron is added to aluminum alloy molten metal fed from a melting furnace or a holding furnace, thereafter, inert gas is blown from a stirring member 210 into the aluminum alloy molten metal in a storage part 203b, and the aluminum alloy molten metal is contacted with the generated numberless bubbles for a fixed time, thus TiB₂ particles are floated up, so as to be separated away from a draff ejection opening 203d.;COPYRIGHT: (C)2007,JPO&INPIT