振动不同步对结晶器内铸坯应力影响有限元分析
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摘要
基于实测连铸结晶器振动曲线数据,分析结晶器两侧振动不同步的运动特性,并利用Ansys软件对结晶器振动过程进行有限元模拟,获得铸坯应力分布。结果表明结晶器在振动过程中发生相对转动,对铸坯产生相对挤压和偏离;铸坯窄面和角部区域受结晶器相对挤压影响,随离弯月面距离增大,其应力增大;在相对挤压时,铸坯底端角部应力受结晶器相对位移和转动影响,随结晶器相对转动角位移增大和相对位移减小,铸坯应力增大。
Based on the measured vibration curve data of continuous casting mould,the motion characteristics of two sides of crystallizer were analyzed,and the vibration process of the crystallizer was simulated by finite element method using Ansys software,and the stress distribution of the slab was obtained.The results show that the relative rotation of the mould in the process of vibration results in relative extrusion and deviation of the slab; the narrow surface and corner area of the billet are affected by relative extrusion of the mould,and the stress increases with the increase of the distance from the meniscus; when relative extrusion occurs,the corner stress at the bottom of the slab is affected by relative displacement and rotation of the mould,and with the increase of the relative extrusion distance from the meniscus.The relative rotation angle increases and relative displacement decreases,and the stress in slab increases.
Based on the measured vibration curve data of continuous casting mould,the motion characteristics of two sides of crystallizer were analyzed,and the vibration process of the crystallizer was simulated by finite element method using Ansys software,and the stress distribution of the slab was obtained.The results show that the relative rotation of the mould in the process of vibration results in relative extrusion and deviation of the slab; the narrow surface and corner area of the billet are affected by relative extrusion of the mould,and the stress increases with the increase of the distance from the meniscus; when relative extrusion occurs,the corner stress at the bottom of the slab is affected by relative displacement and rotation of the mould,and with the increase of the relative extrusion distance from the meniscus.The relative rotation angle increases and relative displacement decreases,and the stress in slab increases.
引文
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[3] Liu Xudong,Zhu Miaoyong,Cheng Nailiang.An analysis of thermal elastoplastic behavior of continuous casting slab mold[J].Acta Metallurgica Sinica,2006,42(11):1137-1142.(刘旭东,朱苗勇,程乃良.板坯连铸结晶器的热弹塑性力学分析[J].金属学报,2006,42(11):1137-1142.)
[4] Long Xuesong,Peng Xianghe.FEM analysis of thermal and deformation fields in mould copper[J].Iron & Steel,2006,41(10):35-40.(龙血松,彭向和.结晶器铜板温度及变形场的有限元分析[J].钢铁,2006,41(10):35-40.)
[5] Wang Pengfei,Li Tiechao,Zhu Liguang,et al.Analysis of 3D heat transfer of slab in mold[J].Foundry Technology,2016(6):1192-1194.(王朋飞,李铁超,朱立光,等.结晶器内铸坯三维传热分析[J].铸造技术,2016(6):1192-1194.)
[6] Li Jun.Analysis on the oscillation unit of thin slab continuous casting machine[J].Science & Technology of Baotou Steel,2004,30(2):67-69.(李军.包钢薄板坯连铸机结晶器振动台机构分析[J].包钢科技,2004,30(2):67-69.)
[7] Guan Likun,Wang Heng,Ren Xueping.Analysis of factors affecting non sinusoidal curve of crystallizer[J].Foundry Technology,2016(10):2243-2246.(关丽坤,王恒,任学平.影响结晶器非正弦曲线的因素分析[J].铸造技术,2016(10):2243-2246.)
[8] Ren Xueping,Ding Tengfei,Si Zhenjiu,et al.Simulation and analysis of factors affecting the curve of crystallizer vibration displacement[J].Iron & Steel,2015,50(9):47-52.(任学平,丁腾飞,司振九,等.影响结晶器振动位移曲线因素的仿真分析[J].钢铁,2015,50(9):47-52.)
[9] Ren Xueping ,Wang Binglin,Yang Wenzhi,et al.Testing,data analysis and process of different oscillating curve of mould [J].Chinese Journal of Scientific Instrument,2006,27(z2):1421-1422.(任学平,王秉林,杨文志,等.结晶器不同振动曲线测试、数据分析和处理[J].仪器仪表学报,2006,27(z2):1421-1422.)
[10] Wang Engang ,He Jicheng ,Yang Zekuan ,et al.Finite element analysis of thermal elasto plastic stress on the continuous casting billet in mold[J].Journal of Northeastern University(Natural Science),1998,19(6):555-557.(王恩刚,赫冀成,杨泽宽,等.结晶器内连铸坯热弹塑性应力的有限元分析[J].东北大学学报(自然科学版),1998,19(6):555-557.)
[11] Yao Man,Wang Wenhua,Wei Shuli,et al.Study of calculation and affecting parameters of mold friction in slab continuous casting[J].Journal of Dalian University of Technology,2002,42(2):195-199.(姚曼,王文华,魏树立,等.板坯连铸结晶器摩擦力计算与影响因素研究[J].大连理工大学学报,2002,42(2):195-199.)