CAJ | 학술논문

文章针对热轧过程中影响SP(sizing press) 压调宽后板坯形状的不对称变形条件,设计了一套在线测量装置,并对SP侧压生产中的实际变形条件进行了测量,根据测量结果,采用数值模拟研究了SP侧压调宽过程中各种不对称变形条件对板坯形状的影响.测量及研究结果表明,板坯两侧存在温度差,工作侧温度比传动侧温度高40℃左右;在侧压方向,传动侧模块比工作侧模块超前约0.03s,在同步方向,传动侧模块比工作侧模块超前约0.04s,在垂直方向两模块都存在位移;上述板坯两侧的温度差、以及模块运动在侧压方向和同步方向的不同步,对板坯形状的影响不大;导致板坯尾部在SP侧压后出现翘曲的主要因素,是垂直方向上的不对称变形条件所致;而导致侧弯的主要原因,则是由于板坯进入SP之前的对中不良,当板坯中心线偏向工作侧10mm以上时,板坯经过SP侧压后明显朝工作侧弯曲.
문장침대열알과정중영향SP(sizing press) 압조관후판배형상적불대칭변형조건,설계료일투재선측량장치,병대SP측압생산중적실제변형조건진행료측량,근거측량결과,채용수치모의연구료SP측압조관과정중각충불대칭변형조건대판배형상적영향.측량급연구결과표명,판배량측존재온도차,공작측온도비전동측온도고40℃좌우;재측압방향,전동측모괴비공작측모괴초전약0.03s,재동보방향,전동측모괴비공작측모괴초전약0.04s,재수직방향량모괴도존재위이;상술판배량측적온도차、이급모괴운동재측압방향화동보방향적불동보,대판배형상적영향불대;도치판배미부재SP측압후출현교곡적주요인소,시수직방향상적불대칭변형조건소치;이도치측만적주요원인,칙시유우판배진입SP지전적대중불량,당판배중심선편향공작측10mm이상시,판배경과SP측압후명현조공작측만곡.
To measure the asymmetry deformation conditions during sizing press,a measuring device is designed. And the asymmetry deformation conditions are obtained by using this device. Based on the measuring outcome, the asymmetry deformation conditions influence on the shape of the slab is researched by FEM The measuring and FEM results show that, there is temperature nonuniformity between slab sides,the work side's temperature ratio is 40℃ around higher than the drive side. Along press direction, the drive side die's movement is 0. 03s swiftness than the work side. Along synchronization direction, the drive side die's movement is 0. 04s swiftness than the work side. Along vertical direction, both dies vibrate. The asymmetry deformation conditions of temperature, press direction and synchronization direction have no effect on the slab shape. The asymmetry deformation conditions vertical direction causes end bending of the slab. There is un-align before the SP,it causes side bending of the slab after SP.