2022-4-19 09:41| 发布者: steelfu4mo| 查看: 588| 评论: 0 |原作者: 佛山万庆物资
At present, according to the different uses of pcm color coating board, with the change of its substrate and coating varieties, different types of conversion film can be selected.The pcm color coating board has been gradually used in many industries in China, and has achieved good results and applications, such as efficient construction, energy saving, pollution reduction, etc.So, what are the types of pcm color coating boards most common in our production and life?
There are many factors affecting the corrosion resistance of pcm color coating board, involving the types of color coating board substrate, coating type, thickness, layer, thickness, use of environmental conditions and the application of mechanical processing, transportation, storage, construction, installation and maintenance and many other factors.
Most customers choose color coated steel plate only focus on the coating requirements, and often ignore the substrate requirements.In fact, the anti-corrosion performance of the substrate is the key to color coated steel corrosion.The thicker the zinc layer, the more difficult it is for the corrosive media to penetrate the coating to the steel plate, and thus the better corrosion resistance.
As for the substrate should be selected hot dip pure zinc or aluminum zinc, it mainly depends on the pH value of the environment.Zinc and aluminum are both amphotropic metals, but their properties differ in acids and bases.
In alkaline media, pure zinc performs better than aluminum-zinc alloys.In contrast in acidic media, hot dip aluminum zinc is better than hot dip galvanizing.
Therefore, in the process of choosing a color-coated steel plate, we suggest the use of aluminum-coated zinc-coated steel plate as a substrate in a relatively acidic use environment.For relatively alkaline environments, we recommend using hot coated ized ized ized as ized substrate.