电镀锌耐指纹板黑斑缺陷分析与控制.pdfVIP

电镀锌耐指纹板黑斑缺陷分析与控制 刘红艳 孙洪利 管连生 范 佳 (河北钢铁集团邯钢公司，邯郸 056015) 摘 要 通过前期大量的基础研究和现场生产跟踪，对产生黑白斑缺陷的电镀锌板进行体式显微镜分析、 共聚焦显微镜三维高度检测分析、扫描电镜检测等手段，确定黑斑位置为缺陷部位。同时对局部工艺进行 调整，包括事故停车时对过渡带镀锌2g/m2 ，保证H SO 与带钢基体不发生反应，降低Fe2+ 浓度，同时停 2 4 止镀液循环泵增加镀液的稳定性；更换具有足够的耐酸性能、表面质量好、挤干效果更好的挤干辊。改进 新工艺提高了镀液的稳定性、减少了镀液残留问题、带钢出镀槽后清洗较干净，大宗黑斑缺陷得到了很好 的控制。 关键词 电镀锌 黑斑缺陷 扫描电镜 The Analyse and Control of Electricity Galvanization Bears Refers to the Plate Black Spot Flaw Liu Hongyan Sun Hongli Guan Liansheng Fan Jia (Hebei Steel and Iron Group Handan Iron and Steel Group Co., Ltd. Corporation, Handan, 056015) Abstract Through earlier period massive basic research and scene production track, the pair process black floccosoids flaws galvanization zinc plate carries on the writing style microscopic analysis, altogether to focus the microscope three dimensional to examine the analysis, methods and so on scanning electron microscope examination examination highly, definite black spot position for flaw spot. Meanwhile makes the adjustment to the partial craft, including accident parking when galvanizes 2g/m2 to the intermediate belt, guaranteed that H SO and the hoop 2 4 substrate does not have the response, reduces the Fe2+ density, simultaneously stops plating the fluid circulating pump to increase plates the fluid the stability; The replacement has the enough acid resistance, the surface quality good, to push does an effect better wringing roller. After improving the new craft to enhance has plated the fluid the stability, to r