【摘要】 为使计算结果接近实际轧制中工作辊的热行为,根据工作辊旋转一周依次经历不同的换热条件,将工作辊圆周方向的坐标转换为时间坐标,施加相应的边界条件.通过对工作辊温度场的分析,得出距工作辊表面10~19 mm的区域,温度缓慢增加,大于19 mm的区域温度几乎不变;深度在2~10 mm之间的区域,温度接近轴对称分布;只有1%左右的区域即距表面小于2 mm的区域,温度变化剧烈,并且很快达到动态稳定.轧制速度对距工作辊表面深度大于2 mm区域的温度影响很小;在轧制节奏小于0.5时,继续减小轧制节奏对工作辊温度的影响较小.更多还原

【Abstract】 Upon the different heat transfer conditions experienced in a revolution,the coordinates of the circumferential direction of work-roll were converted to time coordinate, and the corresponding boundary conditions were added. These methods can make the results close to the thermal behavior of actual rolling. After analyzing the temperature field of work-roll,it show s that the temperature in the depth of 10 ~ 19 mm increases slow ly,while keeps constant in the depth over 19 mm,as well as nearly axial symmetrical distribution in the depth of 2 ~ 10 mm. It can quickly reach dynamic stability after drastically changing in less than 2 mm depth namely about1% area. Rolling speed of the work-roll has little effect on the temperature in the depth of greater than 2 mm. When the rolling rhythm is less than 0. 5,reducing it will have little influence on the temperature of the work-roll.更多还原