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近些年来在镀锌后的纯化处理方面,有不少经验,但仍然不能满足具体条件的要求,在我厂产品与库存零件中,曾发现镀锌零件起“白点”或“白斑”,严重时则有起“白毛”现象。我厂地居亚湿热带地区在稍干燥的季节,出现此种现象较少或没有。当湿度较高季节,问题就比较多了,今年四月份前后,镀锌件出现“白斑”,成为生产中的障碍,故提高镀锌在较高湿度条件下的防护性,是很必要的。
In recent years, there are a lot of experiences in the galvanized purification treatment, but still can not meet the requirements of specific conditions. In our factory products and inventory parts, it has been found that galvanized parts have “white spots” or “white spots” Serious when there is “white hair” phenomenon. I plant in sub-humid tropics in a slightly dry season, there is little or no such phenomenon. When the humidity is high, the problem is more. Before and after April this year, “white spots” appeared on the galvanized parts and became an obstacle in production. Therefore, it is necessary to improve the protectiveness of galvanized under the conditions of higher humidity.