430不锈钢厚规格冷板表面短擦状白印缺陷分析与控制

Analysis and Control of Micro Scratching White-marks on the Surface of 430 Thick Cold Rolled Plate

430不锈钢厚规格冷板在冷轧生产过程中表面出现了严重的短擦状白印缺陷,通过大量的现场试验研究,分析了短擦状白印缺陷产生的原因,结合现场设备生产工况,规范穿带操作方式、优化换辊制度以及轧制工艺,可以有效控制430不锈钢厚规格冷板表面短擦状白印缺陷的产生。

Serious micro scratching white-marks were found on the surface of 430 thick plate in cold rolling process,the reason that the defect of micro scratching white-marks was analyzed by a mass of field experiment,and according to field production conditions,specifying strip threading mode and optimizing roll-changing institution and rolling process can effectively control the defect of micro scratching white-marks on the surface of 430 thick cold rolled plate.