冷硬卷表面水印色斑是1种较严重的冷轧带钢表面质量缺陷,会导致电镀锌带钢表面出现色差,影响冷轧产品质量档次。通过对带钢表面水印色斑的物理研究分析,查明了冷硬卷表面产生水印色差斑缺陷的原因。结合实验室试验与现场生产实践,提出了减少水印色斑缺陷的方法,同时为优化轧制油配方提供了指导思路。 Chill roll surface watermarking is a more serious cold-rolled strip surface quality defects, will lead to galvanized steel strip surface color, affecting the quality of cold-rolled grades. Through the physical study and analysis of the watermark stain on the surface of the strip steel, it is found that the reason of the watermark patch defects on the surface of the chill roll. Combined with laboratory tests and field production practices, the paper proposed a method to reduce the defects of watermark stains, and provided guidelines for optimizing rolling formula.