Protection method for local hard anodization of intermediate case

The invention relates to the technical field of surface treatment, in particular to a protection method for local hard anodizing of an intermediate casing. The protection method sequentially comprisesthe following steps of pre-plating inspection, clamp preparation, hanging and insulation, organic solvent wiping oil removal, hard anodizing, insulator removal, intermediate inspection, insulation protection, oil removal corrosion, gloss treatment, sulfuric acid anodizing, insulator removal and filling. The method avoids the problem of breakdown when a sulfuric acid anodized surface is used as aninsulation protection surface, is simple and effective, and has the beneficial effects that insulation protection time consumption is lower than other insulation manners, and disassembly is easy. 本发明涉及表面处理技术领域，具体涉及中介机匣局部硬质阳极化的保护方法，依次包括如下步骤：镀前检查、准备夹具、装挂与绝缘、有机溶剂擦拭除油、硬质阳极化、去除绝缘物、中间检验、绝缘保护、除油腐蚀、光泽处理、硫酸阳极化、除绝缘物、填充；该方法避免了使用硫酸阳极化面做为绝缘保护面时被击穿的问题，简单有效，具有绝缘保护耗时较其他绝缘方式短，容易拆卸等特点。