In view of the linear relationship between the thickness of the oxide film and its corrosion resistance, the film thickness test is the primary test test. Thickness can be measured by eddy current thickness gauge, metallographic method or other physical methods can also be used. Another indicator of the thickness of the aluminum oxide film is the oxide film weight per unit area, which is generally required to be 2.5 g/m 2 or more. Another important test is corrosion resistance testing, including alkali resistance tests, salt spray tests, and more. The alkali resistance test is a special method for aluminum oxide film. Aluminum oxide film wear resistance is also an important indicator, the test method is falling sand method.
The electrochemical oxidation film of aluminum and aluminum alloys has always been a typical process with a large amount of aluminum metal surface treatment because of its good corrosion resistance and colorability. Therefore, various test methods for the aluminum oxide film are also many.
The MC-2000A coating thickness gauge uses electromagnetic induction to measure the thickness of the coating. The probe located on the surface of the component generates a closed magnetic circuit. As the distance between the probe and the ferromagnetic material changes, the magnetic circuit will change in different degrees, causing changes in the magnetic resistance and the inductance of the probe coil. This principle can be used to accurately measure the distance between the probe and the ferromagnetic material, that is, the thickness of the coating.
RAL Color series is steel coil or aluminum coil coated with standard ral color paint, it's a very common building construction material, it could be used to make roof, cladding, fences, doors, sandwich panel, shutter doors, etc. The color is customed as per the standard Ral color chart.
The base metal could be galvanized steel, galvalume steel, stainless steel. Paint coating could be PE, HDP, FEVE, PVDF, we cooperate with famous brand of PPG, Beckers, Akzo Nobel, etc. We offer 20 years warranty for PVDF coating.
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