结合SPCC钢种对成分及工艺力学性能的要求,对低碳低硅铝镇静如何选择工艺路线进行了科学论证;并从成分控制、温度控制及钢水可浇性控制等方面进行了详细分析。分析认为：转炉终点w（[C]）按0.04%-0.05%,RH到站w（[O]）控制在500×10^-6-700×10^-6,终点温度控制在1 670℃以上,同时保证钢包渣内的w（TFe＋MnO）小于4.0%-5.0%时,RH脱氧合金化后纯环流时间不低于6 min,稳定中包过热度在15-30℃,是保证冶炼生产的关键。
The composition,temperature and the pouring of SPCC steel were discussed,combined the requirements of mechanical performance of steel and low silicon Alkilled lowcarbon technology routs.The result showed that the keys to ensure refining production are as follows,BOF endpoint w（[C]） by 0.04%～0.05%,w（[O]） of the steel in the 500×10^-6-700×10^-6 when the ladle arrives RH,the end temperature at 1670℃ or more.While ensuring the w（TFe＋MnO） in slag is less than 4.0%～5.0%,the pure circulation time of RH deoxidization alloying is not less than 6 min,and the superheat of tundish is in the 15～30℃.
参考文献
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