The galvanizing process of traffic lights you don't know the difference

The traffic signal lamp pole to pole galvanized, some with a period of time will rust, which is why? The gold bearing traffic will take you about the galvanizing process you do not know the signal lamp.

The galvanizing process commonly used two kinds: cold galvanized and hot dip galvanized, exist significant differences between the two.

The difference between the first process is: hot galvanizing is the workpiece degreasing, pickling, dipping and drying after immersed in melted liquid zinc in a certain period of time, can be brought out.

Cold galvanized also called electro galvanized, the electrolytic equipment workpiece by removing the oil, pickling after into the composition of the zinc salt solution, and connected with the negative pole of the electrolytic equipment; in the opposite side of the workpiece placed zinc plate is connected with the negative electrode of the electrolytic equipment, the power supply is switched on. The current from the positive to the negative pole of the directional movement of will in the workpiece on the deposition layer of zinc.

The difference between galvanized products: hot galvanized steel surface does not have the delicate and bright galvanized, but the thickness of the zinc coating is a few times the hot dip galvanized steel. Corrosion resistance is also a few times the performance of galvanized.

Cold galvanized section: cold galvanizing is electroplating, is through the charge adsorption, charge mainly concentrated in the edge, corner, and so on the edge, so the inner surface and the concave place will have the phenomenon of plating. Steel surface appearance is relatively smooth, bright.

Hot dip galvanized is the workpiece profile: degreasing, pickling, dipping and drying of liquid zinc in certain time immersed in melted. Appearance than the electro galvanized slightly rough, silvery white appearance, easy to produce process of ripple and a few drops of tumor, especially in the end of the workpiece is more obvious.

Hot galvanized profiles must provide certificate of quality galvanized.

The traffic signal lamp manufacturers Xiaobian consolidation