Zinc coating thickness measurement (corrosion detection)

 Detection / Consulting: 180-2871-9376 (Wang Li) QQ: 2419906857 galvanized coating thickness determines the plating corrosion resistance. Detailed discussion, please refer to the related data provided by the US annex galvanized Association. The user can select higher or lower than the standard zinc coating thickness. For the smooth surface of the steel sheet 3mm or less, industrial production is difficult to obtain thicker coatings, in addition, the thickness of the steel is not commensurate with the zinc coating thickness will affect the binding force between the coating and the substrate and the coating appearance. Too thick coating will cause the coating appearance of rough, flaky, plating can not withstand handling and installation of the collision. If there are more steel in active elements silicon and phosphorus, industrial production has been relatively thin coating is also very difficult, which is due to the impact of silicon content in the steel alloy layer between the growth pattern of zinc, iron, zinc alloy layer will ζ phase rapid growth and ζ phase into the coating surface, resulting in a rough matte coating surface to form poor adhesion of gray coating.