论文部分内容阅读
为了消除连铸钢坯的表面缺陷，提出了在铸型外部加间断高频交流磁场的铸造方法.用液体Ga作为钢液的模拟物，借助于激光测位仪研究了外加间断磁场对铸型内液体金属运动的影响.通过Sn的连续铸造模拟实验，探讨了弯月面波动和铸坯的表面质量之间的关系.结果表明，外加间断磁场能控制铸型内液体金属的运动，改善铸坯的表面质量控制弯月面的运动，可使铸坯表面形成和间断频率fi相应的条纹.当fi接近于实验系统的固有频率时，电磁场抑制液面运动的效果最好，铸坯的表面质量最佳.
In order to eliminate the surface defects of continuous casting billet, a casting method of adding intermittent high-frequency AC magnetic field to the outside of the mold is proposed. Liquid Ga is used as a simulant for molten steel. With the help of laser positioner, Liquid metal movement.The relationship between meniscus fluctuation and slab surface quality was discussed through the continuous casting simulation of Sn.The results show that the applied intermittent magnetic field can control the movement of liquid metal in the mold and improve the slab Surface quality control of the meniscus movement, the slab surface can be formed and intermittent frequency fi corresponding stripes.When fi close to the natural frequency of the experimental system, the electromagnetic field suppression of the best liquid level, the surface of the slab quality optimal.