冷轧商品卷表面质量控制及工艺优化

Surface Quality Control and Process Optimization of Cold-rolled Commercial Coil

随着钢材市场竞争的日趋激烈,对于冷轧商品卷,用户不仅要求钢板的性能、板形,对钢板的表面质量也提出了更高的要求。表面质量品级率是冷轧商品卷非常重要的一个指标,可以说在一定程度上比性能指标都要重要。该指标的高低不仅直接反映冷轧厂生产能力和全厂的管理技术水平,还直接影响到最终产品的价格。由于冷轧产品的表面质量具有遗传性,所以从酸轧线原料缺陷情况、酸轧线、罩式退火炉以及平整机机组等各自的生产工艺特点,对各自机组产生产品表面质量问题进行分析研究,调整各自的工艺控制参数,并对执行结果进行数据跟踪统计,不断对其进行优化。

With the increasingly fierce competition in steel market, customers require highly not only on functions and types, but also the surface quality. Surface quality grade rate is an important indicator for the cold-rolled commercial coil, to some extent more important than performance indicators . The indicator can not only show the production capability and manage- ment level, but affect the final price as well. As the surface quality has transmissibility, surface quality problems of each u- nit were analyzed from production process characteristics of the pickling line and tandem cold mill（PL/TCM） material de- fects, PL/TCM, bell anealer and skin pass mill were analyzed, data tracking statistic was carried on, and control parame- ters were adjusted and optimized.