板坯连铸异常事件在质量诊断模型中的冶金考虑

Metallurgical Consideration about Abnormal Events during Slab Continuous Casting Process in the Quality Diagnosis Model

在板坯质量在线诊断分析预测模型CISDI_SQDS ONLINER2011中详细考虑了浇铸过程中可能发生的各类异常事件,并按事件发生的等级程度引入其对相应裂纹生成指数的影响大小,同时针对事件状态的读取采用人工设定和自动判定两种方式,且分别讨论了各类事件在当前铸流中的影响范围。模型已成功投入现场工业应用,运行结果表明:模型对异常事件状态的读取准确可靠,事件的影响因子取值合理,能正常反映出事件对相关质量缺陷的影响程度。

Some kinds of abnormal events occurring possibly during casting process were taken into full consideration in the slab quality online diagnosis ＆ analysis mathematic model, CISDI SQDS ONLINE R2011, the effects of which on relevant crack formation index were introduced into the model in terms of the event level. As for the capture modes of event status, there are two styles, one is manual set mode, the other one is automatic judgment mode. And also, the effect ranges of all the events in the casting strand have been discussed respectively. The mathematic model has been put into industrial application successfully, which shows obviously that, the capture method of event status is accurate and reliable, the influence factors of events to quality defects are reasonable and can reflect the effect degree normally.