Vol.20 No.6 常国威等：连续定向凝固中临界牵引速度及其相关因素 ·555· 7日本金属学会.金属.夕ブ”夕.东京：丸善株式会社，1974.10 8陈海清.铸件凝固过程数值模拟，重庆：重庆大学出版社，1991,110 Critical Pulling Velocity and Its Effect Factors during Continuous Unidirectional Solidification Chang Guowei Wang Zidong Hu Hangi Zhang Hu Wang Jingsong 1)School of Materials Science and Engineering 2)Measured Center of Physic and Chemistry of Bei jing 3)School of Metallurgy Engincering ABSTRACT The relation between critical pulling velocity and its effect factor is made by heat transport theoretical analyzing of continuous unidirectional solidification.When the distance of spraying position of forced cooling ingot and the liquid-solid interface is shorter than 10 mm(Ls 10 mm),the calculated result of Al and Al-1%Cu alloy continuous unidirectional solidification is approximately identical with experimental result.All of calcu- lated and experimental parameters are quiet matching,and the continuous unidirectional solidification can be stably performed.The way of raising pulling veloc-ity is also mentioned. KEY WORDS unidirectional solidification;continuous casting;pulling velocity (上接544页) 参考文献 1俞昌铭热传导及其数值分析.北京：清华大学出版社，1982 2刘高典.温度场的数值模拟.重庆：重庆大学出版社，1990 3周纪华，管克智.金属塑性变形阻力.北京：机械工业出版社，1989 Heat Transfer Analysis and Heat Transfer Coefficient Determination of Stainless Steel Cao Hui Zhang Peng Gao Yongsheng Tian Xiaochun?Wang Quanli 1)Material Science and Engineering School,UST Beijing,Beijingl00083 China 2)The Capital Iron and Steel Corporation ABSTRACT The heat transfer coefficient at the contacting surface of two specimen was calculated.In laboratory,the temperatures of some points on surface of 1Crl8Ni9Ti were measured under the condition of hot non-deforming press.From these data,the heat trans- fer characters of the speciman were analysed.By finite difference technique,the heat trans- fer coefficient of 1Cr18Ni9Ti stainless steel could be obtained. KEY WPRD heat transfer coefficient;finite difference method;1Crl8Ni9TiV o l . 2 N 心 0 . 6 常国威等 : 连续定向凝 固中临界牵引速度及其相关 因素 5 55 日本金 属学 会 . 金 属尹 一 夕 少 少 夕 . 东京 : 丸善株式会社 , 1 974 . 10 陈海清 . 铸件凝 固过程数值模拟 . 重 庆 : 重庆大学出版社 , 19 9 1 . 1 10 C ir t i e a l P u lli n g V e l o e iyt an d It s E fe e t F a e t o r s d u r i n g C o n t i n u o u s U n id i r e Ct i o n a l S o li d i if e at i o n hC a ng G u o w e i Wa n g 刀do n g uH aH n q i 及 a n g uH l ) S e h o of o f M a et ir al s S e i e nc e a n d E n g i ne e ir n g 2 ) Me as u 二d C e n et r o f p hy s i e an d hC e m i s t斗 o f B e i 3 ) S e h o o l o f Me alt l u gr y E n g i n e e ir n g 附 之n g iJ n g s o n g J l fl g A B S T R A C T T七e er l iat o n be wt e n c ir it e al uP lli n g v e l o c iyt a n d ist e fe e t l’a c ot r 1 5 m ad e b y he at t r a n s po rt het o er it e al an al y z i n g o f e o n it n u o us u n i d i er c it o n al s o liid if e a it o n . Whe n het d i s at n c e o f s P ayr i n g po s iit o n o f fo 比e d e o o li n g i n g o t an d ht e li q in d 一 s o li d i n et r fa c e 1 5 s h o ert r ht an 10 们。们。 ( L ` 10 nu ) , ht e c al c u l a et d er s ul t o f A I a n d A I 一 l % C u al l o y c o n it n u o us 叨iid 化e it o aln s o liid if e iat o n 1 5 a PP r o x l m a et ly i d e n it e al w iht e x ep ir m e n at l er s u lt . A ll o f e al e -u l aet d an d e x ep ir me n alt Pa n u n e et sr aer qul e t m a et hi n g , an d het c o n it n u o u s u in id er e it o n a l s of iid if e 丽on e an be s at bl y pe for n n e d . hT e w a y o f iar s i n g P u lli n g v e l co 一 i yt 1 5 al s o r n e n it o ne d . K E Y WO R D S u in d i er e it o n al s o liid if e a it o n ; e o n it nu o u s e as it n g ; P ul li n g v e l o c i yt 今命今今令今今今今今令今今命今今命今 今今命命令命命命令帝 命 帝 帝 命今命 命 命帝 命帝帝 命帝 命命命 命命 (上接 54 4 页 ) 参 考 文 献 1 俞 昌铭 . 热传导及其数值分析 . 北京 : 清华大学出版社 , 19 82 2 刘 高典 . 温度场的数值模拟 . 重庆 : 重庆大学出版社 , 1 990 3 周纪华 , 管克智 . 金属塑性变形阻 力 . 北京 : 机械工 业出版社 , 1 9 89 eH at T arn s fe r A n al y s i s an d eH a t T arn s fe r C o e if e i e n t I无te n l l i n a it o n o f S iat n l e s s S te e l ca 。 物i ` ) 及 a n g 八 n g , ) G a 口 物n g s人e n g , ) 万 a 。 ix a o e 人u n , ) 肋 n g Q u a n z产 ) l ) M a t e ir ia S e i e n e e an d E gn i ne e ir n g S e h o o l , u S T B e ij i n g , B e ij i n g 一0 0 0 5 3 e h i n a Z )仆 e C aP iatl I or n a n d s te e l C o 甲o ar it o n A B S T R A C T T卜e h e a t atr n s fe r e oc if e i e n t a t t h e c o n act it n g s u arf e e o f tw o s pe c im e n w as e al e u l a te d . I n Iab o r a t o ry , ht e et m pe ar t u er s o f s o m e P o i n st o n s u r af c e o f I C r l s预g iT w e er m e as u er d u n d e r ht e e o n d iit o n o f h o t n o n 一 de fo mr i n g Per s s . R O m ht e s e d a at , ht e he a t t ar n s - fe r c h a r a c et sr o f ht e s pe e im an w e er a n al y s e d . B y if n i et d i fe er n e e et e h in q ue , ht e h e at atr n s - fe r c co if e i e n t o f I C r l s预 g iT s at i n l e s s s et e l e o u ld be o b iat ne d . K E Y W P R D he a t l r a n s fe r e o e if e 一e n t ; if n let d i fe er n e e m e ht o d ; I C r l s环g iT