冷轧薄板表面色差原因分析

发布时间：2018-01-23 08:44

本文关键词： 冷轧薄板色差粗糙度乳化液润滑　出处：《锻压技术》2017年07期 　论文类型：期刊论文

【摘要】：利用共聚焦显微镜对冷轧薄板的色差表面形貌进行观察,发现条状色差主要是由于带钢表面粗糙度不均匀引起。通过生产现场调研发现,在焊缝连接处色差纹路具有连续性特征,且通过轧机急停取样后发现色差主要是由于连轧机的5#机架引起。分析表明,带钢粗糙度不均与轧制过程中乳化液油膜在工作辊面分布不均相关,而油膜不均与乳化液的喷射方式、轧制速度、乳化液的颗粒度和接触角存在直接关系。通过增加乳化液辅助喷嘴,控制轧制速度,并将轧制油的颗粒度由13μm降低至8μm,油滴接触角由80°降低至63°,色差缺陷得到解决。
[Abstract]:The color aberration surface morphology of cold rolled sheet was observed by confocal microscope. It was found that the strip color difference was mainly caused by the uneven surface roughness of strip steel. The color difference pattern at the weld joint has the continuity characteristic, and through the mill to stop the sampling to discover that the color difference is mainly caused by the stand of the tandem mill. The analysis shows that the color difference is mainly caused by the stand of the tandem mill. The uneven roughness of strip steel is related to the uneven distribution of emulsion oil film on the work roll surface during rolling, while the uneven distribution of oil film is related to the injection mode of emulsion and rolling speed. The particle size of the emulsion is directly related to the contact angle. By increasing the emulsion auxiliary nozzle, the rolling speed is controlled, and the particle size of the rolling oil is reduced from 13 渭 m to 8 渭 m. The contact angle of oil droplet is reduced from 80 掳to 63 掳, and the color difference defect is solved.
【作者单位】：江苏省(沙钢)钢铁研究院;张家港扬子江冷轧板有限公司;江苏沙钢集团有限公司;
【分类号】：TG335.55
【正文快照】： 冷轧薄板主要用于汽车、家电和各类食品包装,因此,除了通常的力学性能和板形要求外,对带钢的表面质量都有很高的要求[1-3]。而冷轧薄板表面条状色差是生产过程中一种常见的缺陷,这种缺陷主要的特征为沿带钢轧制方向呈无规律的条带状分布。条状色差严重影响带钢的外观形貌,并使

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