自动门
成都自动门:电泳涂漆工艺流程
发布时间:2012/12/6
电泳涂漆与常规涂漆工艺一样,在涂漆前必须对被涂工件进行表面预处理,以除去工件表面油污并形成致密的转化膜以提高涂层的防腐蚀性和结合力,然后进行电泳涂漆,在工件表面沉积一场均匀的无缺陷的电泳涂层,经烘烤即可完成电泳涂漆过程。在铝合金材料表面的阳极电泳涂漆中,其表面预处理一般采用阳极氧化,其常用的电泳涂漆工艺流程为:
上件-脱脂-水洗-碱蚀-水洗-中和-阳极氧化-水洗-电解着色-水洗-热纯水洗-纯水洗-电泳涂漆(以下简称电泳)-RO循环水洗2-滴干-烘烤-冷却-下件-检查-包装-入库
一般在热纯水洗之前的工艺划分为电泳涂漆的预处理工艺,热纯水洗之后(含热纯水洗)工艺为电泳涂漆工艺。当采用有光透明电泳涂料时,由于其涂膜光亮透明,对底材缺陷有放大作用,因而对工件的表面预处理要求,不能在预处理中出现影响外观质量的缺陷。
电泳涂漆型材质量检验标准。
电泳涂漆开票是基材表面经阳极氧化和电泳涂漆(水溶性清漆)复合处理的铝合金热挤压建筑型材。电泳涂漆的牌号、规格、表面处理方式、基材的质量、化学成分、力学性能、允许偏差、外观质量和复合膜质量全部检验标准见国家标准。
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