| 摘要 |
PURPOSE:To stably produce a rapid cooling sheet metal without any damage at the edge part by giving ultrasonic wave to refractory holder at a roll end face and further adjusting a gap at the time of rapidly cooling molten metal at kissing part of between high speed revolving cooling roll to produce the casting sheet. CONSTITUTION:The molten metal 16 injected from an injecting nozzle 2 is cooled rapidly at the kissing part of between the high speed revolving cooling rolls 3A, 3B, to produce the casting sheet 4. Then, the ultrasonic wave vibration is given to the water cooling 14, 15 refractory holder 8 abutted on the end side face of the roll 3A, 3B by the ultrasonic vibrator 12 from side end. By this vibration, the sticking of developed shell to the refractory holder 8 is prevented to shift the rapid cooling sheet 4 having good edge part. Further, a positioning adjusting mechanism 13 for gap adjusting is arranged at the refractory holder 8 and so leakage of the molten metal is prevented by suitable gap. Therefore, phsiabrasion of the end face holding 8 is disappeared and the rapid cooling sheet metal having good end face shape is stably produced for a long hour. |
