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·570 北京科技大学学报 2005年第5期 [5]Hermandez V H,Saramarasckra I V,Brimacombe J K.Heat [刀蔡晓辉,张殿华,谢丰广,等.中厚板控制冷却数学模型.东 transfer model of runout table cooling:a fundamental approach. 北大学学报(自然科学版),2003,2410少:923 In:36th Mechanical Working and Steel Processiing Conference. [8]Ozsik M N.Finite Difference Methods in Heat Transfer.London: Baltimore,1994.401 CRC Press,1994 [6)王蜂丽,李谋谓,张少军,等.中厚板控冷过程的数值模拟 [9]程杰锋,刘正东,麓涵,等.热轧带钢卷区及其冷却过程热 与冷却变形分析.机械工程学报,2003,39%5):111 模拟研究.铜铁,2004,3910):40 A temperature model for hot rolled plates during accelerated cooling YU Wanhua,ZHANG Zhongping 1)Materials Science and Engineering School,University of Science and Technology Beijing,Beijing 100083,China 2)Hot Strip Mill,Panzhihua Iron and Steel Company.Panzhihua 617062,China ABSTRACT A thermal model developed by means of the finite difference method was adopted to predict the temperature distribution across the thickness of steel plates.The accuracy of this model was validated by the com- mercial finite element package FEMLAB.The heat transfer of hot plates was considered in this model when cooled in air,laminar water flow,and turbulent water flow.Furthermore,this model coupled the measured thermal physical parameters so as to improve its accuracy. KEY WORDS steel plate;control cooling;heat transfer;rolling;thermomechanical treatment s堂ots亚oPon?oo堂s望eoYesTes空s2es堂e6望a6望s童asYe6堂s业sYso2 eTas5堂s堂toespi6业s堂SPaoes里e里a6 Poooo堂6Y6堂as2a6tsY6业s堂s堂o望eo童 (上接第566页) Effect of electric pulse on P510L steel SONG Juntao,ZHANG Jun,OIN Hongxia,CANG Daqiang,ZONG Yanbing Metallurgical and Ecological Engineering School,University of Science and Technology Beijing,Beijing 100083,China ABSTRACT Electric pulse was used to treat liquid P510L steel for modification and macrostructures.The micro- structures at different electric pulse parameters were observed.It was showed that crystal grains were refined appar- ently and dendritic crystals were reduced obviously by means of air cooling.Pearlitic crystals in P510L steel were found after treated by electric pulse,and the distance between pearlitic crystals and lamina was shortened remark- ably. KEY WORDS P510L steel;electric pulse;modification· , 北 京 科 技 大 学 学 报 年 第 期 , 别的 , 廿即 戊 · 功毗 , 王 峰丽 , 李谋谓 , 张少 军 , 等 中厚板控冷 过程 的数值模拟 与 冷 却变形 分析 机械工 程 学报 , , 川 蔡晓辉 , 张殿华 , 谢 丰广 , 等 中厚板控制冷 却数 学模型 东 北 大 学学报 自然科学版 , , 《 议 苗 免爬 曲难 「 , 程杰锋 , 刘 正 东 , 董涵 , 等 热 轧 带钢 卷区 及 其冷 却过 程热 模拟研 究 钢铁 , , 了肠 ,, 月只 矿, 加 , 毗 , , 山 犷 助 , 知 了 戊 七 比 , 甘 , 毗 刀 比滋 上接第 页 。 , 月只 , 口脚 月 戈, , 政 , , , 饥 祀 比 面 眼 民 加 , 姆
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