镀锌彩涂板要注意涂料的选择

天物彩板专注彩涂板行业17年——更多镀锌彩涂板涂料的品种_彩钢板质量怎么样请拨打网站上方电话免费咨询

1、 一般来说，可根据制造商的标准颜色选择彩色涂层镀锌板，这可以缩短生产初期的工作量。如果需要特殊颜色，则只有在涂料制造商准备好样品且所有性能满足要求后才能生产涂料，因此从订购到彩色涂层板的生产时间将更长。

1、 Generally speaking, the color coated galvanized sheet can be selected according to the manufacturer's standard color, which can shorten the workload in the early stage of production. If a special color is required, the coating can be produced only after the coating manufacturer has prepared samples and all properties meet the requirements, so the production time from ordering to color coated plate will be longer.

2、 The higher the gloss of the coating surface measured by the 60 degree reflection angle, the higher the gloss. The architectural coating is medium matte, ranging from 30 to 55. This is because the high gloss coating has strong reflection and glare to the sunlight in the building; If you are indoors, it is easy to cause visual fatigue under the light at night.
3、 The coating film of color coated galvanized sheet is baked with synthetic resin coating. When used outdoors, the film will deteriorate gradually due to the influence of sunlight, temperature and rain. If you carefully observe the surface of the steel plate or touch it gently with your fingers, you will find white powder. This phenomenon is the pulverization of the film, which is inevitable.
4、 Different types of coatings shall be selected for color coated galvanized sheet to delay the pulverization period. In addition, it has different service life in different areas such as coastal areas, industrial areas and rural areas. In case of corrosion such as coating pulverization and cracking, re spraying shall be carried out to prolong the service life.
Zinc flower refers to the solidification of color coated galvanized sheet by reducing the solidification temperature of galvanized sheet in the production process of galvanized sheet. How is zinc flower formed? As a manufacturer of color coated galvanized sheet, let's explain the formation process of zinc flower:
1。 Uneven nucleation occurs at the interface between steel plate and zinc.
① This process takes a short time (no more than a few percent of a second), but the final shape and size of the zinc flower have been determined.
② Batch crystals grow rapidly along the steel plate / zinc interface until they cover the whole surface, while the surface is still liquid.
2。 The second stage is the n-layer dendrite thickening process, which is slow. The dendrite with preferred orientation grows rapidly and solute elements precipitate in front of the dendrite. When the air / zinc interface is reached, the solidification of zinc dendrites stops.
① Galvanized sheet, how zinc flowers are formed on the surface of galvanized sheet determines the gray appearance of zinc flowers.
② Solidification process of residual liquid phase rich in solute elements.