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PROCESS FOR PRODUCTION OF ALUMINUM INGOTS, ALUMINUM INGOTS, AND PROTECTIVE GAS FOR THE PRODUCTION OF ALUMINUM INGOTS
PROCESS FOR PRODUCTION OF ALUMINUM INGOTS, ALUMINUM INGOTS, AND PROTECTIVE GAS FOR THE PRODUCTION OF ALUMINUM INGOTS
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机译:生产铝锭的过程,铝锭和生产铝锭的保护性气体
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摘要
To provide a method for producing an aluminum ingot whose oxides is reduced by preventing the surface of molten aluminum from being oxidized. The method according to the present invention includes a melting step (melting furnace 1) of melting an aluminum base metal into a molten aluminum or molten aluminum alloy; a holding step (holding furnace 2) of holding the resulting molten aluminum or molten aluminum alloy; a dehydrogenation step (dehydrogenation unit 3) of removing hydrogen gas from the molten aluminum or molten aluminum alloy; a filtration step (filter 4) of removing inclusions from the molten aluminum or molten aluminum alloy; and a casting step (casting device 5) of solidifying the molten aluminum or molten aluminum alloy into a predetermined shape, wherein at least one of the above steps is conducted in the atmosphere of a protective gas containing fluorinating gas, carbon dioxide gas, and nitrogen and/or argon gas.
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