方坯连铸结晶器三维热力耦合分析

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英文篇名：Three dimensional thermo mechanical coupling analysis of billet continuous casting mould 作者：毛学 ; 肖鹏程 ; 刘增勋 ; 朱立光 英文作者：MAO Xue;XIAO Pengcheng;LIU Zengxun;ZHU Liguang;College of Metallurgy and Energy,North China University of Science and Technology;Hebei Engineering Research Center of High Quality Steel Continuous Casting; 关键词：方坯 ; 结晶器 ; 三维温度场 ; 三维应力场 ; 锥度变化 英文关键词：billet;;continuous casting mould;;3-D temperature field;;3-D stress field;;taper change 中文刊名：LGZZ 英文刊名：Steelmaking 机构：华北理工大学冶金与能源学院;河北省高品质钢连铸工程技术研究中心; 出版日期：2019-01-21 14:25 出版单位：炼钢 年：2019 期：v.35;No.197 基金：河北省教育厅资助科研项目(ZD2014012);; 河北省自然科学基金(E2015209207) 语种：中文; 页：LGZZ201901007 页数：7 CN：01 ISSN：42-1265/TF 分类号：52-58

摘要

采用ANSYS软件建立方坯连铸结晶器三维热力耦合模型,利用节点温度传递法模拟拉坯过程,对模型进行分析。通过瞬态分析得出结晶器铜壁和铸坯的三维稳态温度场,以铜壁温度场为热载荷,通过间接耦合方法分析结晶器铜壁受力状态。结果表明:铜壁最高温度点出现在结晶器热面中心距顶端约150 mm处(距弯月面约50 mm),最高温度142℃低于铜壁再结晶温度;铜壁热面最大位移出现在距铜壁顶端200 mm区域(弯月面下100 mm区域)角部位移为0. 112 mm;在弯月面附近等效应力达到最大值,从等效应力来看,整体应力值都在结晶器应力屈服强度之内,因此结晶器不会永久变形。
        A three-dimensional thermo-mechanical coupling model of billet continuous casting mold was established by using ANSYS software. The model was analyzed by the joint temperature transfer method,and the three-dimensional steady-state temperature fields of the mold copper wall and the billet were obtained through transient analysis. The copper wall temperature field was used as the thermal load,and the force state of the copper wall of the crystallizer was analyzed by indirect coupling method. The results showed that the temperature point of the copper wall appeared at the center of the hot surface of the crystallizer about 150 mm from the top( about 50 mm from the meniscus),and the highest temperature was 142 ℃,lower than the recrystallization temperature of the copper wall. The maximum displacement of the hot surface of the copper wall occurred at a corner displacement of 200 mm from the top of the copper wall( 100 mm under the meniscus) of0. 112 mm. The equivalent stress reached the maximum near the meniscus. From the equivalent stress,the overall stress value was within the yield stress strength of the mold so the mold would not be permanently deformed.

引文

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