基于有效拉速和有效过热度的连铸二冷控制模型

Secondary cooling control model based on effective-speed and effective-superheat in continuous casting

摘要: 针对连铸生产中拉速及浇注温度波动频繁,导致静态二冷配水控制下铸坯表面温度波动过大的问题,提出了一种基于有效拉速、有效过热度的新型二冷控制模型.该模型不需要在线实时计算温度场,只需要在已有参数控制模型的基础上,实时计算有效拉速及有效过热度即可对连铸坯的表面温度进行很好的控制.计算机仿真实验表明,该控制模型对连铸过程中拉速及过热度的变化具有良好的适应能力,满足连铸生产的要求,而且模型简单易行.

Abstract: A secondary cooling control model based on effective-speed and effective-superheat was developed to solve the problem of the frequent fluctuations of casting speed and temperature,which can lead to great fluctuations of slab surface temperature under secondary cooling control.The new model can well control the surface temperature of slabs without on-line calculating the temperature values,while it only needs on-line calculating the values of effective-speed and effective-superheat by existing parameter control models.Computer simulation indicates that this control model has good adaptability to the variation of casting speed and superheat,meets the requirements of modern continuous casting production and can be operated simply and conveniently.