| 简介 |
A magnet for increasing a yield attained during a process in which, when separating metals from scraps occurring during a rare earth magnet production process, alloy materials for rare earth magnet are melt-refined so as to positively separate oxides and then subjected to a secondary melting by using a vacuum high-frequency induction melting furnace; wherein part or all of the scraps (3) are charged into an insulated (2) water-cooled crucible (1) or a refractory crucible (7, 21, 22) and subjected to twin plasma arc (10A, 10b) melting and tungsten arc or migration arc (15) melting. |
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