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日本新日铁君津钢厂为减少凝固坯壳与结晶器之间的摩擦阻力,提高连铸坯表面质量,研制成功板坯连铸用超声波振动结晶器,在实际生产中应用取得了良好成绩。这种结晶器的冷却箱外侧设置有大型的磁致伸缩型超声波振动器,通过圆锥管向结晶器铜板传输振动能,从而使对铸坯质量影响最大的弯月面处铜板发生与铸造面相垂直的振动。为使铜板振动均匀,超声波振动器在结晶器宽边方向上各设3个,在窄边方向上各设1个。超声波加振试验结果表明,宽度为1500mm的结晶器,采用上述振动措施后,宽边和窄边方向的平均振幅分别为1.2μm和1.1μm,结晶器四周铜板振动均
Nippon Steel and Tianjin Junjin Iron and Steel Company to reduce the friction between the solidification of the shell and the mold to improve the surface quality of continuous casting slab, the successful development of slab continuous casting with ultrasonic vibration crystallizer, the practical application of the production achieved good results. The outside of the cooling box of this mold is provided with a large magnetostrictive ultrasonic vibrator which transmits the vibration energy to the mold copper plate through the conical tube so as to make the copper plate at the meniscus that has the greatest influence on the slab quality and perpendicular to the casting surface The vibration. In order to make the copper plate vibrate evenly, three ultrasonic vibrators are arranged in the broadside direction of the mold and one each in the narrow side direction. Ultrasonic vibration test results show that the width of 1500mm mold, using the vibration measures, the broadside and narrow side of the average amplitude of 1.2μm and 1.1μm, respectively, around the mold copper plate vibration