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基于BOF-RH-CC冶金流程的22SiMn2中厚板夹杂物控制研究
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Abstract:
基于过程温度分布、工序操作等因素，研究BOF-RH-CC冶金流程条件下的22SiMn2钢夹杂物控制方法，得出了RH工序处理过程及效果是该钢种纯净度的决定性因素，而过程温度与节奏控制对RH处理过程有重要影响，通过缩短Ar站处理时间并建立规范化的RH操作模式，稳定连铸过程，钢中的夹杂物总量由平均0.0136%降低至0.0084%，超声波探伤合格率由80%左右提高至97%以上。
Inclusion control method of 22SiMn2 steel under BOF-RH-CC metallurgical process is studied based on process temperature distribution and process operation. It is concluded that the RH process treatment process and effect are the decisive factors for the cleanness of the steel, and the process temperature and rhythm control have important influence on the RH treatment process. By shortening the treatment time of Ar station, establishing a standardized RH operation mode, stabilizing the continuous casting process, the average total amount of inclusions in steel was reduced from 0.0136% to 0.0084%, and the qualified rate of ultrasonic flaw detection was increased from about 80% to more than 97%.
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