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在连铸过程中中间罐水口堵塞限制了中间罐到结晶器的钢流,并可能导致浇铸中断。为此美国内陆钢铁公司研究了中间罐水口堵塞的机理。研究表明造成中间罐水口堵塞的主要原因是形成的Al_2O_3的堆积(从开始脱氧到结晶器之间均可能生成从Al_2O_3)。因此,必须控制钢水中的氧含量和每个处理过程中渣的成分。该公司采取了以下措施。 1)控制钢包中渣厚度。出钢时使用挡渣球,使流入钢包中的高FeO炉渣最少。由于改进了出钢口和安装电视摄象机,操作人员可最大限度地控制炉子转动。钢包中渣的厚度平均为60mm。
Clogging of the intermediate tank nozzle in the continuous casting process limits the flow of the intermediate tank to the crystallizer and may result in interruption of the casting. To this end the United States inland steel company to study the middle jar nozzle plugging mechanism. The study shows that the main reason for the blockage of the jacketed nozzle is the formation of Al 2 O 3 accumulation (Al 2 O 3 may be formed from the beginning of deoxidation to the mold). Therefore, it is necessary to control the oxygen content in the molten steel and the composition of the slag during each treatment. The company has taken the following measures. 1) control the ladle slag thickness. Slag balls are used during tapping to minimize the flow of high FeO slag into the ladle. Thanks to the improved tapping hole and the installation of the TV camera, the operator can have maximum control of the oven rotation. The average ladle slag thickness of 60mm.