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用多辊轧机轧制厚度小于001mm的金属和合金超薄带时,整个带材表面易产生橘皮状波纹,很不平整。本文研究了前张力、总压缩率、带材边部质量、轧辊表面光洁度和材质等工艺因素对橘皮状波纹的影响。同时测定了带材变形区形状、沿宽度的延伸、应力和织构等,分析证明产生橘皮状波纹的原因是遍布带材上各点的不均匀变形应力,这种不均匀变形主要是由于轧辊表面粗糙度和带材晶粒变形各向异性造成的。由于带材厚度极薄,抗弯能力小,因此在很小应力作用下就产生布满带材表面的橘皮状波纹。实验证明,采用合理的工艺制度,可以消除橘皮状波纹,得到平整的超薄带材。
Rolling mill with a thickness of less than 001mm thin metal and alloy strip, the entire strip surface prone to produce orange peel corrugated, very uneven. In this paper, the influence of the former tension, the total compression rate, the quality of the edge of the strip, the finish of the roll surface and the material on the orange peel corrugation were studied. At the same time, the deformation zone shape, the extension along the width, the stress and the texture of the strip were measured. The reason for the orange peel ripples was that the uneven deformation stress was distributed throughout the strip. The inhomogeneous deformation was mainly due to Roller surface roughness and deformation caused by the strip grain anisotropy. Due to the extremely thin strip thickness and low bending resistance, orange peel ripples are formed over the surface of the strip with very little stress. Experiments show that the use of a reasonable process system can eliminate the orange peel ripples, to obtain a smooth thin strip.