熔池与铸轧辊接触的边界热流是进行双辊薄带铸轧数值模拟研究的重点，通过铸轧过程中金属凝固机制和传热过程的研究，提出结晶辊和熔池接触的边界热流分布函数形式，利用凝固初始位置、薄带坯出坯厚度，再结合能量守恒原理进行求解，确定函数中的待定参数，避开传统方法需要求解坯壳和铸轧辊间气隙热阻的难题；通过施加所提出的边界热流函数对某试验铸轧辊温度场进行求解，结果与实测结果相吻合，这表明文中提出的边界热流分布函数形式与实际相符合。
In the process of the twin-roll strip casting simulation research,the contacting boundary heat flux between molten pool and casting roll is the key. By studying the mechanism of metal solidification and heat transfer,the contact-ing boundary heat flux distribution function form between crystallization roller and molten pool was proposed. Using the initial position of solidification,the thickness of thin strip,and combined with the principle of conservation of energy, thus the unknown parameters of the function are determined. The difficult problem of the air gap thermal resistance be-tween the casting roll and shell in traditional approach is avoided here. Applying the proposed boundary heat flux func-tion to solve the casting roll temperature field in a certain experiment,the solved results are coincided with the measured results,and it indicates the proposed boundary heat flux distribution is consistent with the actual distribution.
参考文献
| [1] | 张兴中;廖鹏;王明林.双辊薄带连铸技术状况的调查分析[J].钢铁,2010(3):13-17,22. |
| [2] | 朱光明;方园.双辊薄带连铸结晶辊辊形优化[J].钢铁研究学报,2007(4):28-30. |
| [3] | 王国栋;吴迪;朱苗勇;王昭东;刘振宇;李建平.后工业化时代的生态化轧钢工艺技术：钢铁共性技术协同创新中心工艺与装备开发平台简介[J].中国冶金,2014(11):1-8. |
| [4] | 杜凤山;吕征;王三众;黄华贵;孙静娜;许志强.双辊薄带铸轧熔池流动规律分析与试验[J].钢铁,2016(1):60-64. |
| [5] | 崔海涛;王国栋.双辊薄带铸轧机过程控制系统平台开发[J].中国冶金,2013(10):48-51. |
| [6] | 张彩东;章仲禹;梁小平;丁培道.双辊薄带连铸铸辊材质及水冷结构分析[J].重庆大学学报（自然科学版）,2009(6):648-652. |
| [7] | 兰鹏;杜辰伟;纪元;张家泉.汽车用高锰 TWIP 钢的研究现状[J].中国冶金,2014(7):6-16. |
| [8] | Pedro G. Q. NETTO;Roberto P. TAVARES;Mihaiela ISAC.A Technique for the Evaluation of Instantaneous Heat Fluxes for the Horizontal Strip Casting of Aluminum Alloys[J].ISIJ International,200111(11):1340-1349. |
| [9] | L.Strezov.Experimental Studies of Interfacial Heat Transfer and Initial Solidification Pertinent to Strip Casting[J].ISIJ International,19989(9):959-966. |
| [10] | Bouchard, D;Leboeuf, S;Nadeau, JP;Guthrie, RIL;Isac, M.Dynamic wetting and heat transfer at the initiation of aluminum solidification on copper substrates[J].Journal of Materials Science,20098(8):1923-1933. |
| [11] | 张卫;梁高飞;王成全;于艳;方园.一种薄带连铸工艺中瞬态界面传热模拟测量方法[J].宝钢技术,2009(4):32-34. |
| [12] | 曹光明 .双辊铸轧薄带钢液位控制、铸轧力模型及工艺优化的研究[D].东北大学,2008. |
| [13] | G.-X. Wang;E.F.matthys.Expeimental determination of the interfacial heat transfer during cooling and solidification of molten metal droplets impacting on a metallic substrate: effect of roughness and superheat[J].International Journal of Heat and Mass Transfer,200225(25):4967-4981. |
| [14] | E. Hajjari;M. Divandari;S.H. Razavi;S.M. Emami;S. Kamado.Estimation of the transient interfacial heat flux between substrate/melt at the initiation of magnesium solidification on aluminum substrates using the lumped capacitance method[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,201111(11):5077-5082. |
| [15] | Zhang, P.;Liu, L.;Ren, X.;Zhang, Y.;Fang, Y.;Yang, Q..Numerical simulation on the stress field of austenite stainless steel during twin-roll strip casting process[J].Computational Materials Science,2012:61-67. |
| [16] | 张晓明 .双辊铸轧薄带钢过程数值模拟及实验研究[D].东北大学,2005. |
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