轧制液对冷轧板卷黑斑的影响

The Effect of Rolling Fluid on Black Stains of Cold-Rolled Sheet Coils

冷轧板卷具有表面光洁度好、平整性好、尺寸精度高和力学性能好等诸多优点,应用领域广泛。冷轧板卷在生产过程中需要使用冷轧轧制液作为工艺润滑介质,提供润滑、冷却、清洗、防锈等功能,但如果轧制液选择或使用中维护不当,会造成冷轧钢板卷表面缺陷,如板型不良、板面反射率低,出现色差、泥点、黑斑、退火后脏污等问题,尤其是黑斑问题成为困扰钢铁企业的难题。文章针对冷轧板卷在轧制、退火后产生的黑斑问题开展研究,从轧制工艺、配套润滑、维护等方面分析黑斑产生的原因,提出治理策略,解决客户轧制过程中的板面黑斑问题.

Cold-rolled sheet coils are widely used due to their excellent surface finish,good flatness,high dimensional accuracy,and superior mechanical properties.During the production process,cold rolling fluids are used as process lubricants to provide lubrication,cooling,cleaning,and rust prevention functions.However,improper selection or maintenance of rolling fluids can lead to surface defects on cold-rolled steel coils,such as poor flatness,low surface reflectivity,color differences,mud spots,black stains,and post-annealing dirt,with black stains being a particularly challenging issue for steel enterprises.The paper focuses on the study of black stain problems that occur on cold-rolled sheet coils during rolling and annealing processes.It analyzes the causes of black stain formation from the aspects of rolling process,lubricant selection,and maintenance,and proposes treatment strategies to address surface black stains issues encountered during the rolling process.