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建立了反映扁锭特点的钢锭冷却和加热过程的二维数学模型。用该模型对本钢10.866吨扁锭的浇后冷却过程以及在单侧上烧嘴式均热炉内的加热过程进行了计算,由计算得出扁锭实现液芯加热和液芯轧制应该控制的装炉热状态。在炉时间以及温热制度等工艺参数。通过现场实测验证计算结果可信,说明数学模型可用。上述工作为现场制订扁锭的液芯加热和液芯轧制操作规程提供了理论依据,在本钢进行了51炉、6769吨扁锭的生产性实验,实验结果表明该项节能工艺是成功的,并取得了重大经济效益: 1.提高均热炉生产能力1.5倍; 2.降低热耗0.795×10~6kJ/t(ingot); 3.节电3.12kW·h/t(ingot); 4.减少氧化烧损0.5％。
A two-dimensional mathematical model of ingot cooling and heating process was established to reflect the characteristics of slab. Using this model, the cooling process of 10.866 tons slab of Benxi Iron and the heating process in one-side burner soaking furnace were calculated. It was calculated that the slab heating and liquid core rolling should be controlled Furnace heating state. In the furnace time and temperature system and other process parameters. Through the field test to verify the calculation results are credible, indicating that the mathematical model is available. The above work provides a theoretical basis for preparing the liquid core heating and liquid core rolling operating rules of the slab at the scene. The production experiment of 51 furnaces and 6769 tons of slab at Benxi Iron & Steel Co., Ltd. was carried out. The experimental results show that the energy saving process is successful , And achieved significant economic benefits: 1. To increase the production capacity of soaking furnace 1.5 times; 2. To reduce heat consumption 0.795 × 10 ~ 6kJ / t (ingot); 3. Power Saving 3.12kW · h / t (ingot); 4 Reduce oxidative burns 0.5%.