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一般以铝作为钢的终脱氧济。对细晶粒钢要求钢中铝含量大于0.02％,对深冲铝镇静钢要求钢中铝含量在0.04～0.07％。传统的加铝方法是在出钢过程中将铝块随钢流加入钢包内,这种加铝方法缺点是:铝烧损大,回收率低,钢中残铝含量不稳定。 为了提高和稳定铝的回收率以满足不同钢种的要求,人们一直在探索新的加铝方法:如铝圈法、铝管法、铝弹法、铝线法等。其中铝线法由于操作方便、设备简单、收得率稳定,已广泛在工业生产中采用。
Aluminum as the final general deoxidation of steel. For fine grain steel, the content of aluminum in steel is more than 0.02%, and for deep-drawn aluminum, the content of aluminum in steel is 0.04-0.07%. The traditional Al-addition method is to add aluminum block to steel ladle in the tapping process. The disadvantages of this aluminum adding method are as follows: large amount of aluminum burns and low recovery rate, and the residual aluminum content in the steel is unstable. In order to improve and stabilize the aluminum recovery rate to meet the requirements of different types of steel, people have been exploring new methods of adding aluminum: aluminum ring method, aluminum tube method, aluminum bullet method, aluminum wire method and the like. Among them, the aluminum wire method has been widely used in industrial production because of its convenient operation, simple equipment and stable receiving rate.