应用PMO提高低碳钢φ300mm连铸圆坯心部质量  

PMO improves the central quality of φ300mm round billet of low carbon steel

作　　者：查全超 邓齐根 张亚兵 杨仁强 李海 ZHA Quan-chao;DENG Qi-gen;ZHANG Ya-bing;YANG Ren-qiang;LI Hai(Steelmaking Plant,Wuhu Xinxing Casting Pipe Co.,Ltd.,Wuhu 241000,Anhui,China)

机构地区：[1]芜湖新兴铸管有限责任公司炼钢厂,安徽芜湖241000

出　　处：《连铸》2022年第4期59-65,共7页Continuous Casting

摘　　要：在芜湖新兴φ300 mm圆坯连铸机上引入脉冲磁致振荡技术(Pulsed Magneto-Oscillation,简称PMO)以提高铸坯心部质量,探索了PMO电源参数和连铸机拉速对低碳20钢连铸坯质量的影响。结果表明,采用合适的PMO参数处理可显著降低20钢径向碳分布,碳极差比对比坯平均降低50%,且效果稳定。不采用PMO技术,将连铸机拉速从0.75 m/min提高至0.85 m/min后,对比坯低倍不合格,碳极差达到0.12%。采用PMO技术的铸坯仍保持了较好的心部质量,碳极差降低至0.03%,生产效率提高13.3%。Pulsed magneto oscillation(PMO) technology was introduced into the continuous caster in Wuhu Xinxing to improve the central quality of φ300 mm round billet.The effects of PMO parameters and casting speed of continuous caster on the quality of low carbon 20 steel round billet are explored.The results show that the radial carbon distribution of 20 steel billet can be significantly reduced by using appropriate PMO parameters.The carbon range is 50% lower than that of the billet without PMO treating,and the effect is stable.Moreover,when the casting speed of the continuous caster was increased from 0.75 m/min to 0.85 m/min,the quality of billet without PMO treatment became unqualified,and the carbon range reached to 0.12%.Whereas the billets treated with PMO still maintained high central quality,carbon content range was 0.03%,and the production efficiency was increased by 13.3%.

关 键 词：脉冲磁致振荡(PMO) 低碳钢 均质化 碳极差 拉速 

分 类 号：TF777[冶金工程—钢铁冶金]