| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotator for stirring molten metal with which the fining and the dispersion effects of gas bubble are secured by improving the conventional rotator for stirring the molten metal and also, a manufacturing cost can be reduced by simplifying a structure and making the manufacture easy. SOLUTION: A ceramics-made stirring disk is fixed to the lower end part of a shaft having a gas supplying path in its inner part, and the lower end part of the gas supplying path is opened on the bottom surface of the stirring disk. A protruded part in which the opening part side of the gas supplying path in the stirring disk is protruded from the peripheral edge part side is arranged on the bottom surface of the stirring disk. COPYRIGHT: (C)2004,JPO
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