高级别表面耐指纹家电板要求钢板表面近乎零缺陷。对于在生产过程中出现的表面黑点缺陷,采用扫描电镜(SEM)和电子探针(EPMA)进行分析。结果表明,黑点缺陷种类较多,不同的黑点缺陷产生于热镀锌机组不同部位,如后处理风箱、拉矫机等。通过对设备的调整和清洁等措施,可成功消除黑点缺陷。 High-level surface fingerprint-resistant appliance panels require nearly zero defect surface steel. For surface black spot defects occurring in the production process, analysis was performed using scanning electron microscopy (SEM) and electron probe (EPMA). The results show that there are many kinds of black spot defects, and different black spot defects occur in different parts of the hot-dip galvanizing unit, such as after-treatment bellows and straightening machine. Through the adjustment and cleaning equipment and other measures, can successfully eliminate black spot defects.