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圓坯連鑄結晶器溫度場模擬與坯殼厚度預測

Simulation of temperature field and prediction of shell thickness in a continuous casting mould of round billets

  • 摘要: 基于連鑄圓坯結晶器溫度與熱流實測數據,建立了連鑄圓坯凝固的三維傳熱模型,計算出結晶器和鑄坯的溫度場,并得到鑄坯的固相率與坯殼厚度分布情況.溫度計算結果與實測數據符合較好,表明此數學模型能夠較為準確地反映實際情況.討論了拉速、澆注溫度等因素對坯殼厚度的影響,并對利用模型計算與經驗公式計算得到的坯殼厚度進行了對比.

     

    Abstract: Based on the measured data of mould temperature and heat flux, a three-dimensional transient heat-transfer model was developed to simulate the temperature field of a round billet in continuous casting, and the solid fraction and shell thickness of the billet were calculated. The results agree with the measured data, which indicates that the real process conditions can be well reflected by the model. The effects of casting speed and pouring temperature on the shell thickness were discussed, and the comparison of the model with experiential formulas in calculating the shell thickness was also carried out.

     

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