八钢四号板坯连铸机全程动态轻压下技术的应用  

Application of Dynamic Soft-reduction Technology in the No.4 Slab Continuous Caster of Bayi Steel

作　　者：冯科[1] 孔意文[1] 青绍平[1] 龙灏[1] 任佳[1] 狄明军[2] 徐栋[2] 王豫东[2] 鲁军[2] 郭庆华[2] 吴军[2] 

机构地区：[1]中冶赛迪工程技术股份有限公司,重庆400013 [2]宝钢集团八钢公司第二炼钢厂,新疆乌鲁木齐830022

出　　处：《铸造技术》2010年第3期348-351,共4页Foundry Technology

摘　　要：通过对八钢四号板坯连铸机现有轻压下系统的技术改造和升级,使其具备了(包括弧形段和水平段)动态的全程轻压下功能,并成功实现了工业化应用。生产实践表明,改造后四号机在弧形段和水平段均可正常实施轻压下功能,整个压下过程平稳顺利,辊缝控制精度良好,L2模型跟踪准确、算法先进,L1程序控制合理、执行可靠,在矫直段实施轻压下时铸坯无内部裂纹生成,铸坯内部质量得以明显改善,充分实现了轻压下技术的冶金工艺效果。The reconstructing ＆ upgrading work had been done smoothly for the original soft- reduction system of the No. 4 slab continuous caster in Bayi steel. As a result, all the segments （including both arc segments and horizontal segments ） now possess the dynamic soft-reduction function, which have been put into the industrial application successfully. Through the production practice, it can be seen that, after the reconstructing project, the dynamic soft-reduction function could be applied normally both in the arc segments and in the level segments for the No. 4 slab caster, and the whole soft-reduction process are conducted steady and smoothly, and the precision of roll gap control is good. The L2 model always makes an exact trace for the casting process and has the advanced algorithm, while the L1 program, with reasonable control function and the reliable execution, can be obtained. When the soft-reduction action was executed in the unbending segment （Seg. 7）, there is no internal crack taking place in all as-cast slabs, and the internal quality of slab such as center segregation is improved obviously, which show good metallurgical effect by dynamic soft-reduction technology.

关 键 词：板坯连铸机 动态轻压下 实时跟踪动态控制模型 

分 类 号：TF341.6[冶金工程—冶金机械及自动化]