Secondary cooling control model based on effective-speed and effective-superheat in continuous casting
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摘要: 針對連鑄生產中拉速及澆注溫度波動頻繁,導致靜態二冷配水控制下鑄坯表面溫度波動過大的問題,提出了一種基于有效拉速、有效過熱度的新型二冷控制模型.該模型不需要在線實時計算溫度場,只需要在已有參數控制模型的基礎上,實時計算有效拉速及有效過熱度即可對連鑄坯的表面溫度進行很好的控制.計算機仿真實驗表明,該控制模型對連鑄過程中拉速及過熱度的變化具有良好的適應能力,滿足連鑄生產的要求,而且模型簡單易行.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.
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Key words:
- continuous casting /
- cooling /
- process control /
- mathematical models /
- computer simulation
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