薄带连铸用侧封板服役过程中热应力分析  

Thermal stress analysis during service of side sealing plate for thin strip continuous casting

作　　者：郭海荣 李鑫[2] 李化龙 施一新 杨文刚[3] 李红霞[3] GUO Hai-rong;LI Xin;LI Hua-long;SHI Yi-xin;YANG Wen-gang;LI Hong-xia(Institute of Research of Iron and Steel,Shasteel,Suzhou 215625,Jiangsu,China;School of Materials Science and Engineering,Zhengzhou University,Zhengzhou 450001,Henan,China;State Key Laboratory of Advanced Refractories,Sinosteel Luoyang Institute of Refractories Research Co.,Ltd.,Luoyang 471039,Henan,China)

机构地区：[1]江苏省沙钢钢铁研究院有限公司,江苏苏州215625 [2]郑州大学材料科学与工程学院,河南郑州450001 [3]中钢集团洛阳耐火材料研究院有限公司先进耐火材料国家重点实验室,河南洛阳471039

出　　处：《中国冶金》2022年第4期27-33,共7页China Metallurgy

基　　金：国家重点研发计划资助项目(2021YFB3701405);国家自然科学基金资助项目(51932008,51772277);中原科技创新领军人才基金资助项目(204200510011)。

摘　　要：为解决薄带连铸用侧封板服役过程中热应力过大导致破裂的问题,采用数值模拟的方法,通过热-结构耦合分析,研究了BN基侧封板不同材料参数和预热温度对服役过程热应力的影响,并对高抗侵蚀性复合结构侧封板的适用性进行了讨论。结果表明,可以通过降低材料的线膨胀系数、弹性模量以及增大导热系数来降低侧封板服役过程中的热应力;预热温度越高,热应力越小;可将合适组分的含碳材料复合到侧封板工作面,以提高侧封板抗侵蚀性。In order to solve the problem of cracking caused by excessive thermal stress during the service process of the side sealing plate for thin strip continuous casting,the numerical simulation method was adopted,and the thermal-structural coupling analysis was carried out to study the effect of different material parameters and preheating temperature of the BN-based side sealing plate on thermal stress during service,and the feasibility of high corrosion resistance composite structure side sealing plate were discussed.The results show that thermal stress of the side sealing plate during service can be reduced by reducing the thermal expansion coefficient,elastic modulus and increasing thermal conductivity of the material.The higher the preheating temperature,the smaller the thermal stress.The suitable composition of carbon-containing materials can be compounded to the working surface of the side sealing plate to improve the corrosion resistance of the side sealing plate.

关 键 词：薄带连铸 侧封板 热应力 数值模拟 抗侵蚀性 

分 类 号：TF341.6[冶金工程—冶金机械及自动化]