超宽板坯连铸机结晶器长寿化技术研究与实践  

Research and practice on long-life technology of ultra-wide slab continuous caster mould

作　　者：武郁璞[1] 刘少伟 张胜伟[1] 王向松[1] 刘帅[2] WU Yupu;LIU Shaowei;ZHANG Shengwei;WANG Xiangsong;LIU Shuai(No.2 Steelmaking and Rolling Plant,Anyang Iron and Steel Co.,Ltd.,Anyang 455004,China;School of Metallurgy and Ecological Engineering,University of Science and Technology Beijing,Beijing 10083,China)

机构地区：[1]安阳钢铁股份有限公司第二炼轧厂,河南安阳455004 [2]北京科技大学冶金与生态工程学院,北京100083

出　　处：《炼钢》2022年第6期38-41,57,共5页Steelmaking

摘　　要：针对超宽板坯连铸机结晶器铜板磨损严重的问题,结合生产现场实际情况分析原因并提出改进措施。通过控制足辊跳动量不大于0.5 mm,提升扇形段0段、1段对弧精度至±0.30 mm,显著减轻了结晶器宽面的磨损;铜板镀层材料使用钴镍合金,表面处理应用热喷涂表面改性技术,并增加热处理工艺,镀层最高硬度由276 HV提升至391 HV,提高了41.7%,增强了镀层耐磨度。采用以上措施后,超宽板坯连铸机结晶器使用寿命可以稳定在800炉以上,改进效果明显。Aiming at the serious wear of the copper plate of the mould of the ultra-wide slab continuous casting machine,the reasons were analyzed in combination with the actual situation of the production site and the improvement measures were proposed.By controlling the runout of the foot roller to be no more than 0.5 mm,the accuracy of the zero section and the first section of the segment was increased to±0.30 mm,which significantly reduced the wear of the wide surface of mould.The coating material of copper plate used a cobalt-nickel alloy,and the surface used thermal spraying surface modification technology and a heat treatment process,the hardness of the coating was increased from the highest 276 HV to 391 HV,an increase by 41.7%,which enhanced the wear resistance of the coating.After adopting the above measures,the service life of the mould of the ultra-wide slab continuous casting machine can be stabilized to over 800 furnaces,and the improvement effect is obvious.

关 键 词：超宽板坯 结晶器 钴镍合金 长寿化 

分 类 号：TF777.1[冶金工程—钢铁冶金]