Color coating roll are green and environmentally-friendly building materials. How to choose correctly, use them reasonably, and improve the service life are the most concerned issues for owners and project builders.
The correct choice of color coating roll should consider the natural environment, use environment, design life and structural characteristics of the building to select the steel type, specification, plating and coating. Architects, project owners and processors consider the safety performance of buildings (impact resistance, shock resistance, fire resistance, wind pressure resistance, snow resistance), residential performance (waterproof, sound insulation, heat insulation), durability (resistance to pollution, durability) , appearance retention), economy (low cost, easy to process, easy to maintain, easy to replace). For color coated steel suppliers, these properties are to be converted into color coated steel properties as steel mills and are guaranteed. The performance requirements of color-coated steel sheets mainly include mechanical properties (tensile strength, yield strength, elongation), coating properties (coating type, coating thickness and coating adhesion) and coating properties (paint type, color, gloss, durability). Performance, processability, etc.).
Among them, wind resistance, impact resistance, snow resistance, and seismic resistance are related to the mechanical properties of the material. Of course, it is also related to the waveform of the color profiled steel plate, the thickness of the steel plate, the span, and the lay length. If a suitable color coated steel plate is selected, it is appropriate. The profiled steel plate design can not only meet the safety factor of the building but also reduce the construction cost. The durability, processability and appearance retention of the material are largely determined by the durability of the coating and coating.
This refers mainly to the corrosion of metals. Corrosion (pulverization and fading) of the coating is mainly caused by light, supplemented by temperature, humidity and corrosive media. Therefore, the evaluation of color coated steel plates also needs to consider factors such as sunshine hours and sunshine intensity. Therefore, the corrosive environment specially designed for color coating roll is quite complicated. At present, there is no corresponding division method in foreign countries. It is only to expose the color-coated plates in several typical climatic conditions, and guide users with relevant results, such as Europe.
The Coil Steel Coating Association (ECCA) selected Lisboa (Portugal) with high UV, Hoek van (Netherlands) for industrial marine climate, Hendaye (France) for marine climate, and Geleen (Germany) for industrial climate as a test site for exposure. The United States continues to conduct sun exposure tests in southern Florida, which is surrounded by the high temperature, high humidity, and sunny capital. This is also the most demanding exposure test field recognized by the color coating industry.
