摘要
采用扫描电镜(SEM)、能谱仪(EDS)及激光共聚焦显微镜(LSCM)等测试手段对汽车用冷轧板表面色差形貌及成因进行了分析。结果表明,色差缺陷呈纵向黑白条纹相间分布,黑条区域较白条区域粗糙;冷轧末机架轧制油铺展不均匀,导致轧辊对带钢的转印率不均匀,是纵向色差缺陷产生的主要原因;通过降低轧制油颗粒度、减小轧制油颗粒接触角,提高轧制油颗粒均匀性及轧制油洁净度,冷轧汽车板纵向色差问题得到了有效解决。
The morphology and cause of striped chromatism on the surface of cold-rolled automobile sheet was investigated by SEM,EDS and LSCM and so on. The results showed that the chromatism appeared to be black streaks alternating with white ones,and the black region was coarser than white area. The main cause of striped chromatism was the inhomogeneous spreading of rolling oil on the last stand of tandem cold mill lead to the uneven of the transfer efficiency. Through reducing the granularity and contact angle of rolling oil,increasing the uniformity and cleanliness of rolling oil,the striped chromatism of cold-rolled automobile sheet was improved effectively.
出处
《上海金属》
CAS
北大核心
2017年第5期11-15,共5页
Shanghai Metals
关键词
冷轧汽车板
色差
粗糙度
轧制油
cold-rolled automobile sheet,striped chromatism,roughness,rolling oil
