| 摘要 |
PROBLEM TO BE SOLVED: To form a flow causing to stir at the same time in the axial direction and the circumferential direction only with a magnetic field generating coil moving in the axial direction. SOLUTION: The magnetic field generating coil 3 moving in the axial direction, for generating the magnetic line of force to the axial direction of a solidified shell 3 to an electrically conductive material 1 in a molten state surrounded by the solidified shell 4, is constituted so that the axial centers Oa to Of of respective rings 3a to 3f are tilted to the axis Ov of the solidified shell 4, and further, the axial centers Oa to Of of the respective rings 3a to 3f are arranged so as to be shifted one by one at intervals to the circumferential direction and the axial direction of the solidified shell 4, thereby such a flow that movement in the axial direction and the rotational movement are superposed is caused to the electrically conductive material 1 in a molten state surrounded by the solidified shell 4, so as to perform stirring. COPYRIGHT: (C)2008,JPO&INPIT
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