以不同的速度对高纯铝箔进行轧制试验, 用非接触式三维表面轮廓仪观测了铝箔表面形貌, 并从润滑状态、表面轮廓自协方差函数及功率谱密度等方面研究了轧制速度对铝箔表面形貌的影响。结果表明: 在轧制过程中, 摩擦主要是由轧辊表面微凸体压入高纯铝表面产生的塑性变形及犁沟作用所致; 铝箔的表面粗糙度主要取决于轧辊的表面粗糙度, 轧制速度的变化不会影响铝箔表面轮廓的主要特征; 轧制速度从5 m·s-1提高到7 m·s-1后, 铝箔横向表面粗糙度无明显变化, 而轧向表面粗糙度下降, 表面微观形貌得到了改善; 轧制速度的变化不影响铝箔表面轮廓的自相关性, 铝箔的表面轮廓以空间波长较长的空间随机分量为主。

Rolling tests of high purity aluminum foil were carried out at different speeds, surface morphology was observed with a three-dimensional non-contact surface profiler, and the effect of cold rolling speed on surface morphology of high purity aluminum foil was studied from the lubrication condition, autocovariance function of surface profile and power spectral density. The results show that the friction was mainly generated by the plastic deformation and plowing effect formed by the roll surface asperities pressing in the high purity aluminum surface in the rolling process. The surface roughness of aluminum foil mainly depended on the roll surface roughness, and the main feature of aluminum foil surface did not change with the variation of the rolling speed. When the rolling speed was increased from 5 m·s-1 to 7 m·s-1, there was no obvious changes on the transverse direction surface roughness of the aluminum foil, but the rolling direction surface roughness decreased, thus the surface morphology of aluminum foil was improved. The change of rolling speed had no effects on the autocorrelation of aliminum foil surface profile, and the aluminum foil surface profile was mainly the space random component with longer space wavelength.