電鍍鋅。電鍍鋅與熱浸鍍鋅相比工藝簡單，成本較低。對電纜橋架的結構無特殊要求。電鍍鋅經鈍化處理后能夠顯著地提高其保護性能。電鍍鋅層一般在 12 左右。因而不適用于耐腐蝕壽命要求較高的場合。
Electro galvanized. Compared with hot-dip galvanizing, electrogalvanizing has simple process and low cost. There are no special requirements for the structure of cable tray. The passivation treatment of electrogalvanizing can significantly improve its protection performance. The galvanized layer is generally about 12. Therefore, it is not suitable for occasions with high requirements for corrosion resistance life.
Electrogalvanizing has a ministerial standard in China. There are clear provisions on the selection of electroplating coating types, coating thickness, coating adhesion strength, corrosion resistance test, etc. These standards have different selection objects and content requirements. At present, there are many manufacturers producing galvanized cable tray in China, and they are different when referring to the above technical standards. In order to improve the corrosion resistance of galvanization, galvanization nickel alloy can be used or highly passivated after galvanization (products such as "galvanization bridge").
Hot dip galvanizing. Under atmospheric conditions, zinc has good corrosion resistance. Galvanizing is used as a sacrificial anode to protect cathode metal. Its corrosion resistance life depends on the thickness of zinc coating and corrosion rate. The thickness of hot-dip galvanized zinc layer is generally above 65um (455g/m2). The interface between zinc and iron forms a layer of zinc iron alloy, which enhances the adhesion of zinc layer. The atmospheric exposure tests of hot-dip galvanized coatings under various environmental conditions have been carried out abroad.
According to the test results, hot-dip galvanizing can meet the requirements for the service life of cable tray. Because hot-dip galvanizing has good corrosion resistance and high performance price ratio, steel hot-dip galvanizing bridge is widely used at home and abroad. For components with thin wall and large slenderness ratio, deformation is easy to occur during hot dip galvanizing, which needs to be considered in the structure of cable tray and galvanizing process.
The above is a detailed introduction to Shandong cable tray. I hope it will be helpful to you. If you have any questions, please contact us. We will provide services for you with our attitude http://www.cpccoffee.com