| 摘要 |
PURPOSE:To produce a blank material for a magnet alloy directly from molten metal without using any casting mold by ejecting a molten magnet alloy continuously under pressurization on the surface of a rotating body and solidifying quickly the same. CONSTITUTION:A magnet alloy is melted and is continuously ejected under pressurization on the surface of a rotating body under rotation and is quickly solidified, whereby a plate-like blank material having <=0.2mm. thickness or a bar-like blank material having <=0.2mm. diameter is obtd. directly from the molten metal without using any casting mold. The temp. of the molten metal is preferably about the liquid phase temp. of the alloy +(100-400 deg.C), the ejection pressure is preferably about 1-2kg/cm<2> and the speed of drawing out the blank material is preferably about 10-40m/sec. The magnet alloy is a Cu-Al-Mn magnet alloy contg., by weight, 0.1-65% Cu, 15-50% Al, and total <=5% secondary component elements (Nb, Ce, Sm, P, Be, Mg, etc.) and the balance consisting substantially of Mn. |
