钢包外壁热像与内衬厚度之间关系的模拟研究-材料学专业论文.docxVIP

武汉科技大学硕士学位论文第 武汉科技大学硕士学位论文 第 I页 摘襄 钢包是冶金工业中重要的高温容器，其使用寿命及使用的安全性对钢铁企业生产的正 常运行影响巨大.如何实现对钢包内衬厚度的在线监测，是广大科研工作者共同关心的问 题。 本文首先根据某钢厂使用钢包的结构和实际所周材料，建立了包括钢究及钢结构的钢 包三维传热数学模裂.采用 CFD 软件计算了对应不同工作层厚度时，钢 ?衬、钢结构的温 度场，分析了工作层厚度变化对外表面温度的影响。计算结果表明 z 钢包外表面源度与工 作层厚度之间存在着对应关系，随着钢包使用时间延长，工作层厚度的不断减薄，外表面 温度逐渐升高.然后，跟踪倒包的实际工作状况，现场测量了钢包外表团温度及大修时钢 包工作层的厚度.测盘结果与计算结果篡本吻合，这表明所建立的数学模型及求解方法是 正确的.簸后，综合钢包外表面温度及残余厚度的实际测量结果、钢包外表面温度及残余 厚度之间的对应关系和误袭的分布规律，采用分区修正的方法，对数值模拟计算结果进行 了误差修正，建立了钢包外表面各点温度和内衬残余厚度之间对应关系的数据瘁，为利用 红外热像仪对钢包内衬的损毁程度进行监测奠定了基础. 关键词z 倒包:温度场:数值模拟:红外热像:厚度监测 第 II页 武汉科技大学硕士学位论文 Abstract Ladle is one of 伽 important high temperature vessels 讪伽e metallurgy industry. Its service Iife and 侃fety have great effect on the nonnal iron mak:ing. How ωmeωure the 伽ickne郎。f inner lining of ladle on line is a ∞mmon question for all of rese缸chers. Ac埠。rdingωthe actua1 structure and materials of the ladle of one plant，the heat transfer mathematical model in three-dimension wωestablished. The temperaωre fields of inner lining and 阳el structure of different lining thicknesses were calculated by CFD 50食ware. The resu1t indicates 伽at there is a coπesponding relationship 协twe泪 temp笛ature of steel shell and the 也ickn础。f inner lining .The tempera阳res of 皿eel shell will rise wi曲曲曲ickness of inner lining decreasing and servicing 阳1e increasing. The 阳n仰raωres of steel shel1 of ladJe and ωrresponding residωl 伽ickness of 切ner lining were measured. By ωmparing them with the calculated results，it indi耐.es 阳t calcu1at问resu1ts are ∞rrespondingωmeasuring resu1ts and 也e mathematical model isωrrωt. According ωmeasuring results of the temperaωres of 剑eel shell and inner lining thickness，the relationships between 切rnperatures of 毗el shell and ωrres萨mding inner lining 伽ickness and the law of creating errors，theωlculated results wω amended in different area on steel shell. A daturns bank about relationship betw抵加阳npera阳m of steel shell and the thickness of inner lin