作　　者： ; ; ; ;

机构地区： 东北大学材料与冶金学院轧制技术及连轧自动化国家重点实验室

出　　处： 《东北大学学报（自然科学版）》 2007年第1期60-62,共3页

摘　　要： 在建立旋转坐标系和引进虚拟系统条件下,根据傅立叶传热微分方程,建立了双辊铸轧过程中凝固层焊合点位置的判别式K=d-4asη2ω-1arcsin(H/R)+s20+s0,由该式能够推断出凝固层焊合点的位置,即当K=0时,凝固层焊合点位于辊缝之间;当K>0时,凝固层焊合点位于辊缝之上;当K<0时,凝固层焊合点位于辊缝之下.根据这一判别式,为确保凝固层焊合点位于理想位置,铸轧速度、熔池高度和辊缝宽度三者之间应满足:arcsin(H/R)=(d+2s0)dω/4asη2. On the conditions that a foundation of rotational coordinate system was set up with a virtual system introduced in, a discriminant is derived for the position of the welding point of solidification layers in the process of twin-roll casting, i. e. K=d-√4asη^2w^-1arcsin（H/R）＋s0^2＋s0, based on the Fourier. It is to be used the way the position of welding point lies in the roll gap if K = 0 or above the gap if K 〉0 or below the gap if K 〈 0.According to the discriminant, an expression arcsin （H/R） =（d＋2s0）dw/4asη^2 is given indicating the relationship between casting-rolling speed, pool height and roll gap width, which has to be satisfied to ensure the position where the welding point is ideal.

关 键 词： 双辊铸轧 虚拟系统 凝固层焊合点 判别式

领　　域： [冶金工程]