1. the difference between processes:
Hot-dip galvanizing is to remove oil, pickling, impregnating, drying after immersion in the dissolved zinc solution for a certain period of time, can be put forward.
Cold galvanizing, also known as galvanizing, is the use of electrolytic equipment after degreasing, pickling workpiece into the composition of zinc salt solution, and connected to the electrolytic equipment of the negative electrode; in the opposite part of the workpiece placed zinc plate connected to the electrolytic equipment of the positive electrode, turn on the power supply, the use of current from the positive electrode to the negative electrode of the directional movement, it will sink on the workpiece. Deposit a layer of zinc.
2. the difference between appearance and appearance:
The surface of zinc plating is smooth and bright, and the plating layer with color passivation technology is yellow-green as the main color, showing seven colors. The plating layer of the white passivation process is blue-white or white-green, and the plating layer of the white passivation process is slightly colorful with sunlight at a certain angle.
In the corners of complex workpieces, it is easy to produce "electric burn" and become dark. The zinc layer is thicker. It is easy to form a current dead angle in the negative corner and produce an undercurrent dark area, which is thinner in the area. The workpiece has no zinc nodules and lumps. Knowledge of galvanized pipe
3. The appearance of hot-dip galvanizing is slightly rougher than that of galvanizing, and it is silvery white. The appearance of hot-dip galvanizing is easy to produce process water marks and a few droplets, especially at one end of the workpiece. However, the zinc coating of hot dip galvanizing is several times thicker than that of zinc electroplating.
With the above summary, I hope it will be helpful to our customers. If you don't understand or ask for help, please click on our official website: Jinan Galvanized Tube http://www.jnxjm.com or call for advice, we will do our best to solve it for you.