If you want to ask about the material suggestions of color steel plate coil, of course, it is the color steel plate manufacturer. Today, Jinan color steel will take a look at the suggestions of color steel plate coil?

1.彩钢板卷的基材可以选用冷轧板卷或热镀电镀层钢材，虽然彩钢板卷的有机涂层部分有很好的防腐蚀作用，但有机涂层中仍有一些小的空隙，空气及水份都可能进入进而可能使基材生锈，故以无镀层的基材做成的彩钢板卷，使用寿命短，且划伤后很容易扩散导致涂层剥落。彩钢板卷的基材以镀锌钢板或镀锌合金钢板为主。

1. The base material of color steel coil can be cold-rolled coil or hot-dip electroplated steel. Although the organic coating of color steel coil has good anti-corrosion effect, there are still some small gaps in the organic coating, and air and water may enter, which may rust the base material. Therefore, the color steel coil made of non coated base material has short service life, And it is easy to diffuse after scratching, resulting in coating peeling. The base material of color steel coil is mainly galvanized steel plate or galvanized alloy steel plate.

2.彩涂的生产程序分为基材的前处理，化学转化膜(非有机金属涂层)，有机非金属涂层，另外有些生产线还有涂后工艺。

2. The production process of color coating is divided into pretreatment of substrate, chemical conversion film (non-organic metal coating), organic non-metal coating, and post coating process in some production lines.

3.基材前处理：作为基材的镀锌钢板如果不是在生产后直接进入一道彩涂工序，则可能会在运输过程中出现锈蚀(白锈)，灰尘，及其他污染。如果不能把这些去掉，则会影响彩涂的质量。成品彩涂卷的质量及所有物理、化学性能都与前处理有密切关切。另外，在镀锌生产后，为了防锈而涂油，这些油也要是彩涂生产前除去。

3. Substrate pretreatment: if the galvanized steel plate as the substrate does not directly enter a color coating process after production, rust (white rust), dust and other pollution may occur during transportation. If these cannot be removed, the quality of color coating will be affected. The quality and all physical and chemical properties of the finished color coating roll are closely concerned with the pretreatment. In addition, after galvanizing production, oil is applied for rust prevention, and these oil should also be removed before color coating production.

现在使用较多的前处理方法为碱溶液脱脂法。

At present, the most commonly used pretreatment method is alkali solution degreasing method.

4.化学转化膜：作用有二，一是进一步提高防锈能力，二是提高基料与涂料的黏附性，改善基板涂装性能。一般有三个步骤：一为磷化，先在金属表面形成大量结晶，再用磷盐溶液使金属表面形成一层磷酸盐膜;二是钝化封闭，磷酸盐膜仍有一些孔，用铬酸盐与孔点产生化学反应，形成保护膜。三为纯水洗涤，用去盐或去离子的水洗去钝化液体。

4. Chemical conversion film: it has two functions: one is to further improve the anti rust ability, the other is to improve the adhesion between the base material and the coating and improve the coating performance of the substrate. There are generally three steps: first, phosphating, first form a large number of crystals on the metal surface, and then form a phosphate film on the metal surface with phosphorus salt solution; The second is passivation and sealing. There are still some holes in the phosphate film. Chromate reacts with the hole points to form a protective film. Third, wash with pure water, and wash the passivation liquid with desalted or deionized water.

5.有机涂层：有机涂层分为底漆和面漆，底漆要求不高，可以彩顺涂，但现在企业为了生产安全，底漆面漆一般都彩逆涂方式。涂后工艺：涂后工艺有印花、压花、可剥离保护膜、层压等，增加了彩钢板的装饰和保护性能。另外，国外一些涂后工艺还有平整和拉直等在冷轧、镀锌生产线中使用的工艺。

5. Organic coating: the organic coating is divided into primer and finish. The requirements for primer are not high, and it can be painted in sequence. However, for the sake of production safety, the primer and finish paint are generally painted in reverse. Post coating process: the post coating process includes printing, embossing, peelable protective film, lamination, etc., which increases the decoration and protection performance of color steel plate. In addition, some foreign post coating processes include leveling and straightening, which are used in cold rolling and galvanizing production lines.