【摘要】 采用坯龄模型和多模型控制器的先进控制策略设计了莱钢合金钢矩形坯连铸机动态二冷配水在线控制系统。该系统融合了L1,L2级"联锁保护措施"和数据"诊断和处理"功能,提供用户自由制定工艺接口功能,支持用户增加新钢种和修订相应的二冷工艺。上线质量跟踪及冶金效果分析表明,在线控制系统运行准确、稳定,有效避免了铸坯表面裂纹、中间裂纹及中心裂纹等缺陷的产生,提高了铸坯的中心致密度和等轴晶率。更多还原

【Abstract】 Secondary cooling water dynamic control system for bloom caster of alloy steel in Laigang was designed based on residence time model and advanced control strategy of multiple model controller.In the system,interlock protection system of L1 and L2 and data diagnosis and processing functions were included.The control system also offers technological interface for adding new steel grade in production and/or revising secondary cooling parameters by user.Quality track and metallurgical effect analysis show that operation of the control system was precise and stable,no surface crack,mid-crack and center crack were in bloom,and center soundness and equiaxed crystallinity of bloom were improved.更多还原