The correct choice of color coated aluminum coil should consider the natural environment in which the building is located, the use of the environment, the design life, structural characteristics, to choose the matching steel, specifications, plating and coating, etc..
Architects, project owners and processors think about the building's safety performance (impact resistance, seismic, fire, wind pressure, snow), living performance (waterproofing, sound insulation, heat insulation), durability (pollution resistance, durability, appearance of adherence), economy (low cost, easy to process, easy to maintain, easy to change) and so on.
For color coated aluminum coil manufacturers, these properties as color coated aluminum coil factory should be transformed into color coated aluminum coil performance , and be guaranteed. Color coated aluminum coil performance requirements are mainly mechanical properties (tensile strength, yield strength, elongation), plating performance (plating varieties, plating thickness and plating adhesion) and coating performance (coating type, color, gloss, durability, processability, etc.).
Among them, wind resistance, impact resistance, snow resistance, earthquake resistance, etc. and the mechanical properties of the material is related, of course, and the waveform of the color profiled steel plate, the thickness of the steel plate, the span, purlin distance, if you choose the appropriate color coated aluminum coil and then with the appropriate when the design of the profiled steel plate, not only to meet the building's safety coefficient can reduce the cost of the project. The durability, processing performance and appearance of the material is largely determined by the durability of the coating and plating.
Color coated aluminum coil surface has a layer of coating, coating is to play an important role in "anti-corrosion". Let's talk about this anti-corrosion is how to organize up.
(1) Brush coating
Brush can use a variety of paints, as long as it is not a poor leveling of the paint on the line, this step mainly plays a role in allowing the paint to penetrate into the pores of the metal surface, can strengthen the metal adhesion.
(2)Scraping
This step, the requirements to be higher, with high liquid purity, viscosity to high paint, note to play the common defects in paint (cracking, peeling, rolled, etc.) problems.
(3) Dip coating
Dip coating is a traditional coating method, easy to cause air pollution, always remember not to use volatile coatings.
(4) Drenching
Drenching is the process of pouring paint onto the surface of the coated material. Although it is easy to operate and has high productivity, drenching consumes more paint than dipping and creates safety and dipping problems, so be sure to pay attention to it.
(5) Spraying
Spraying has the advantage of (coated thickness uniformity, appearance is also flat, high production efficiency), air dyeing is not small. Color coated aluminum coil surface has a layer of coating, coating is to play an important role - corrosion prevention.
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