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.彩鋼板卷的基材可以選用冷軋板卷或熱鍍電鍍層鋼材，雖然彩鋼板卷的有機涂層部分有很好的防腐蝕作用，但有機涂層中仍有一些小的空隙，空氣及水份都可能進入進而可能使基材生銹，故以無鍍層的基材做成的彩鋼板卷，使用壽命短，且劃傷后很容易擴散導致涂層剝落。彩鋼板卷的基材以鍍鋅鋼板或鍍鋅合金鋼板為主。

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.彩涂的生產(chǎn)程序分為基材的前處理，化學轉(zhuǎn)化膜(非有機金屬涂層)，有機非金屬涂層，另外有些生產(chǎn)線還有涂后工藝。

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.基材前處理：作為基材的鍍鋅鋼板如果不是在生產(chǎn)后直接進入一道彩涂工序，則可能會在運輸過程中出現(xiàn)銹蝕(白銹)，灰塵，及其他污染。如果不能把這些去掉，則會影響彩涂的質(zhì)量。成品彩涂卷的質(zhì)量及所有物理、化學性能都與前處理有密切關(guān)切。另外，在鍍鋅生產(chǎn)后，為了防銹而涂油，這些油也要是彩涂生產(chǎn)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.

現(xiàn)在使用較多的前處理方法為堿溶液脫脂法。

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

4.化學轉(zhuǎn)化膜：作用有二，一是進一步提高防銹能力，二是提高基料與涂料的黏附性，改善基板涂裝性能。一般有三個步驟：一為磷化，先在金屬表面形成大量結(jié)晶，再用磷鹽溶液使金屬表面形成一層磷酸鹽膜;二是鈍化封閉，磷酸鹽膜仍有一些孔，用鉻酸鹽與孔點產(chǎn)生化學反應，形成保護膜。三為純水洗滌，用去鹽或去離子的水洗去鈍化液體。

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.有機涂層：有機涂層分為底漆和面漆，底漆要求不高，可以彩順涂，但現(xiàn)在企業(yè)為了生產(chǎn)安全，底漆面漆一般都彩逆涂方式。涂后工藝：涂后工藝有印花、壓花、可剝離保護膜、層壓等，增加了彩鋼板的裝飾和保護性能。另外，國外一些涂后工藝還有平整和拉直等在冷軋、鍍鋅生產(chǎn)線中使用的工藝。

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.