| 摘要 |
PURPOSE:To obtain stably and continuously a thin amorphous alloy strip by controlling supply pressure and roll peripheral speed in accordance with the slit space of a pouring nozzle in such a manner that the specific weight of a molten metal satisfies the specific equation. CONSTITUTION:The molten metal which forms an amorphous compsn. is supplied from a slit-shaped pouring nozzle onto the surface of a cooling roll under high speed rotation, by which the molten metal is quickly solidified and the thin amorphous alloy strip is continuously obtd. The slit space W of the pouring nozzle is specified in a range of 0.04-0.12cm, the supply pressure P of 0.15- 0.75kgf/cm<2>, the peripheral speed V of the cooling roll of 3,000-4,500cm/s, respectively. The supply pressure and roll peripheral speed are controlled in accordance with the slit space of the pouring nozzle so as to satisfy the relation expressed by the equation where the specific weight of the molten alloy is designated as zetakgf/cm<2>. |
