镀锌彩涂卷质量光从合金化程度来看受以下因素影响

1镀锌彩涂卷酸洗后，助溶剂的质量和温度一般在60℃左右
2锌锅温度， 镀锌彩涂卷锌锅温度一般在450-470度之间是最好的，但由于锌锅价格非常昂贵，低温会延长锌锅的使用寿命，所以厂家一般控制在430度左右。低温使合金化更糟。

三。 镀锌彩涂卷热浸镀锌时间越短，镀锌时间越长，表面越粗糙、干燥，锌含量越高，合金化程度越低。
4冷却，自然冷却是最好的，但厂家一般都是用水进行淬火，这样才能满足生产节奏的需要，同时也使表面光洁度高，但合金化也停止了。
从工程实践的角度来看，通常业主或涂料供应商会要求进行扫砂处理。不经任何处理直接喷涂热浸镀锌层是他们难以接受的。原因很简单，不经处理就不能保证后续涂层的质量。
对于旧型热浸镀锌表面，在涂装前进行扫砂处理是可以理解的，因为污垢和氧化会影响附着力。但是，这种表面处理不应以牺牲正常锌涂层的耐腐蚀性为代价。对于新的热镀锌涂层表面，不存在这样的问题，因此表面处理方法不需要使用吹砂。
铬酸盐溶液通常用于热镀锌零件的钝化，影响后续涂层的附着力。对于热镀锌后需要涂漆的部件，最好不要做钝化处理。
另外，喷涂前最好用非金属磨料扫砂， 镀锌彩涂卷这样可以增强后续涂层的附着力。
值得注意的是，处理液的pH值偏高，附着力随强碱性而降低。

1. After pickling, the quality and temperature of dissolving aid are generally about 60 ℃

2. Zinc pot temperature, zinc pot temperature is generally between 450-470 degrees is the best, but because zinc pot is very expensive, low temperature will extend the life of zinc pot, so manufacturers generally control at about 430 degrees. Low temperature makes alloying worse.
3. The shorter the hot dip time, the longer the galvanizing time, the coarser and drier the surface, the more zinc content, and the lower the alloying.
4. Cooling, natural cooling is the best, but manufacturers generally use water to quench, so as to meet the needs of production rhythm, and also make the surface finish high, but the alloying also stops.
From the perspective of engineering practice, usually the owners or coating suppliers will require sand sweeping treatment. It is difficult for them to accept that the hot-dip galvanized coating is sprayed directly without any treatment. The reason is very simple, and the quality of subsequent coating can not be guaranteed without treatment.
For the old type of hot-dip galvanizing surface, it is understandable to do sand sweeping treatment before painting, because dirt and oxidation will affect the adhesion. However, this surface treatment should not be done at the expense of the corrosion resistance of normal zinc coating. For the new hot-dip galvanized coating surface, there is no such problem, so the surface treatment method does not need to use sand sweeping.
Chromate solution is usually used for passivation of hot-dip galvanized parts, which affects the adhesion of subsequent coatings. For the components that need to be painted after hot galvanizing, it is better not to do passivation treatment.
In addition, before spraying, it is better to use non-metallic abrasive to sweep sand, which can enhance the adhesion of subsequent coating.
It is worth noting that the pH value of the treatment solution is on the high side, and the adhesion will decrease with the strong alkalinity.