板坯质量在线诊断分析系统的研究与开发

针对板坯表面裂纹和内部裂纹两大类质量缺陷,基于凝固传热仿真、应力应变计算及连铸相关冶金工艺理论分析,并结合浇铸异常事件专家知识库方法,开发了CISDI板坯质量在线诊断分析数学模型及其应用软件CISDI_SQDS ONLINE R2011,其中引入裂纹生成指数来作为质量评级的参考理论指标,并在其计算过程中耦合考虑了与浇铸冶金准则密切相关的质量损失因子和异常事件对应的调节因子,实现了理论解析与专家系统的有机结合,为板坯质量的预测和控制提供了重要的理论工具,以期在板坯连铸生产中得以有效的推广应用。

Development and Research on Slab Quality Diagnosis & Analysis System Online

According to the two styles of slab defects(surface crack & internal crack),the CISDI slab quality diagnosis & analysis system online CISDI_SQDS ONLINE R2011 has been developed based on heat-transfer & solidification simulation,stress & strain calculation and metallurgical process analysis about continuous casting,combined with expert knowledge database for specific casting events,in which,the respective crack formation indexes are introduced to be the theoretical reference data for slab quality level evaluation,meanwhile,both the quality loss factors related to casting metallurgical rules and the adjusting factors related to casting events have been taken into full consideration,which has been integrated organically with theoretical analysis and expert system,and can be widely used as an important theoretical tool for prediction & control of slab quality in slab continuous casting process.