轧制速度对高纯铝箔表面形貌和表面粗糙度的影响.pdfVIP

第三届全国金属加工润滑技术学术研讨会文集 轧制速度对高纯铝箔表面形貌和表面粗糙度的影响 周亚军 何小龙 程峰 （中南大学机电工程学院 湖南 长沙 410083 ） 摘 要：在∅860mm 四辊轧机上以不同速度进行了高纯铝箔的轧制试验，用非接触式三维表面轮廓仪测量 了铝箔样品表面粗糙度和表面形貌，并从润滑状态、表面轮廓自相关性及功率谱密度等方面研究了轧制速 度对铝箔表面形貌和表面粗糙度的影响。结果表明：在轧制过程中，摩擦主要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。高纯铝箔的表面粗糙度主要取决于轧辊表面粗糙度，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5m/s 提高到7m/s，铝箔横向表面粗糙度无明显变化， 而轧向表面粗糙度下降，表面微凸体不仅数量减少，而且分布更加均匀，铝箔表面微观形貌得到了改善。 关键词：轧制速度；表面粗糙度；表面形貌；自协方差函数；功率谱密度 Effect of rolling speeds on the surface topography and roughness of high purity aluminum foil Abstract: Rolling experiments of high voltage anode aluminum foil at different speeds were carried on the ∅860mm four-rolling mill, surface roughness and surface topography were measured by three-dimensional non-contact surface profiler. The effect of cold rolling speeds on the surface roughness and topography of high voltage anode aluminum foil was studied by the analysis of the lubrication regime, autocovariance function and power spectral density. Results show that, in the rolling process, the friction is mainly generated by the plastic deformation and plowing effect formed by the press-in of roll surface asperities on the high purity aluminum surface. Surface roughness of high purity aluminum foil mainly depends on the roll surface roughness, and the main feature of aluminum foil surface does not change with the variation of the rolling speed. When the rolling speed is increased from 5m/s to 7m/s, there is no obvious change for the transverse direction surface roughness of aluminum foil, but the rolling direction surface roughness decreases, and not only the number of asperity on the aluminum foil surface reduces, but also its distribution becomes more uniform, thus the surface topography of aluminum foil is improved. Key Words