1. the difference between processes:
Hot-dip galvanizing is to remove oil, pickle, dip medicine, and immerse the workpiece in the dissolved zinc solution after drying for a certain time, then put forward.
Cold galvanizing, also known as galvanizing, is the use of electrolytic equipment to remove oil and pickle the workpiece into the solution of zinc salts, and connect the negative electrodes of the electrolytic equipment; on the opposite side of the workpiece, place a zinc plate to connect the positive electrodes of the electrolytic equipment, turn on the power supply, and use the current to move from the positive to the negative electrodes in a directional way, it will sink on the workpiece. Deposit a layer of zinc.
2. the difference between appearance and appearance:
The appearance of galvanizing is smooth and bright. The electroplating layer with color passivation process is also yellow-green, showing seven colors. The white passivation coating is blue-white or green, while the white passivation coating is slightly colorful from a certain angle to the sunlight. Knowledge portal for galvanized pipes
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 and silver-white than that of galvanizing. The appearance of hot-dip galvanizing is prone to 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.