彩钢板的板材使用特点
天物彩板专注彩板行业16年——0.476mm彩钢板规格_石家庄有名的彩涂卷厂家请拨打网站上方电话咨询
一。彩钢板的基材可以是冷轧钢板，也可以是热浸镀锌钢板。彩钢板的有机涂层虽然具有良好的防腐效果，但有机涂层仍存在一些小的缝隙，会使空气和水进入其中，使其基材生锈，无法使用。因此，采用无涂层基材制成的彩钢板使用寿命短，容易划伤扩散，造成涂层剥落。彩钢板的基材主要是镀锌钢板或镀锌合金钢板。
2。彩色涂料的消耗过程分为基材预处理、化学转化膜（非有机金属涂料）、有机非金属涂料。此外，一些消费品生产线也有后涂装工艺。
三。基材的预处理：如果作为基材的镀锌钢板在使用后没有直接进入彩涂工序，在运输过程中可能会出现锈蚀（白锈）、灰尘等污染。如果脱不掉这些，会影响彩绘的质量和效果。废品的质量和各项理化性能与预处理密切相关。另外，在镀锌消耗后，进行油的防锈处理，这些油也在彩色料消耗线上制备。目前，碱溶液脱脂法作为预处理方法得到了广泛的应用。
四。化学转化膜：具有两个功能：一是进一步提高防锈能力；二是提高基材与涂层的附着力，提高基板的涂层性能。一般有三个步骤：一是磷化，在金属表面形成大量晶体，然后用磷酸盐溶液在金属表面形成磷酸盐膜；二是钝化密封，磷酸盐膜上还有一些孔，用铬酸盐与孔发生化学反应点，形成保养膜。三是纯水洗涤，用脱盐或去离子水洗涤使液体钝化。
5个。有机涂层：有机涂层分为底漆和面漆。底漆要求不高，可按顺序使用。但是，为了保证使用的安全，底漆和面漆一般是反向使用的。后涂工艺：后涂工艺包括印刷、压花、可剥保养膜、层压等，增加彩钢板的装饰和保养性能。此外，国外的一些涂装工艺是用于冷轧和镀锌消费线的矫直和矫直工艺。
1. The base material of color steel plate can be cold-rolled steel plate or hot-dip electroplated steel plate. Although the organic coating of color steel plate has a good anti-corrosion effect, there are still some small gaps in the organic coating,
which can make air and water enter into it and make its base material rusty and unusable. Therefore, the color steel plate made of uncoated base material has a short service life and is easy to scratch Diffusion, resulting in coating peeling. The
base material of color steel plate is mainly galvanized steel plate or galvanized alloy steel plate.
2. The consumption procedure of color coating is divided into pre-treatment of base material, chemical conversion film (non organic metal coating), organic non-metal coating. In addition, some consumption lines also have post coating process.
3.
Pretreatment of base material: if galvanized steel plate as base material does not directly enter a color coating process after consumption, it may present rust (white rust), dust and other pollution during transportation. If you can't get rid of these,
it will affect the quality and effect of color coating. The quality of waste products and all physical and chemical properties are closely related to the pre-treatment. In addition, after galvanizing consumption, oil is applied for rust prevention, and
these oils are also prepared in the color coating consumption line. Now, alkali solution degreasing method is widely used as the pre-treatment method.
4. Chemical conversion film: it has two functions: one is to further improve the antirust ability;
the other is to improve the adhesion between the base material and the coating, and improve the coating performance of the base plate. Generally, there are three steps: first, phosphating, forming a large number of crystals on the surface of the metal,
and then making a phosphate film on the surface of the metal with the phosphate solution; second, passivating and sealing, there are still some holes in the phosphate film, using chromate to produce chemical reaction with the hole points, forming a maintenance
film. The third is pure water washing, using desalinated or deionized water washing to passivate the liquid.
5. Organic oating: organic coating is divided into primer and finish. The primer is not highly requested and can be applied in sequence.
However, in order to ensure the safety of consumption, the primer and finish are generally applied in reverse. After coating process: after coating process includes printing, embossing, peelable maintenance film, lamination, etc., which increases the
decoration and maintenance performance of color steel plate. In addition, some of the foreign coating processes are leveling and straightening processes used in cold rolling and galvanizing consumer lines.
