| 摘要 |
PURPOSE:To uniformize thickness is width direction of foil metal at the time of producing the foil metal by rapid cooling as bringing molten metal flowed down from a slit nozzle into contact with a cooling body moving at high speed, by widening the slit gap toward its both ends gradually to make more flow- down rate as approaching to both ends. CONSTITUTION:The molten metal 6 in a molten metal storage vessel 1 is flowed down from the slit nozzle 2 and brought into contact with the cooling roll 3 rotating at high speed to cool rapidly and produce the foil metal 7. In case of parallel gap for this slit 21, the foil metal 7A becomes to thicker as approaching to both ends thereof. Therefore, by making wider for the gap as approaching to both ends of slit 22, the foil metal 7B is obtd. uniformly for thickness in the width direction. Further, in case forming the nozzle 2 by small hole, the hole diameter as approaching to both ends makes bigger. And by longer slit-lit as approaching to the center part, the flow-down rate at the center part may reduce by this contacting resistance. |
