How to control the quality of galvanized layer in Galvanized Wire
Galvanized Wire is very common in our lives, so how do you control the quality of the galvanized layer in Galvanized Wire? The galvanized layer is one of the effective ways to prevent Galvanized Wire corrosion. There are two production processes for Galvanized Wire galvanizing, one is Galvanized Wire (Galvanized Wire) and the other is Hot Galvanized Wire. A disadvantage of hot-dip galvanizing is the large loss of strength. In the production process of small-sized Galvanized Wire ropes, electroplated zinc is mostly used as the raw material coating processing method for the rope-making Galvanized Wire.
The advantage of electrogalvanizing is that the Galvanized Wire galvanized layer is uniform and dense. The mechanical properties of the Galvanized Wire before and after plating are small and can be adjusted as required. The disadvantage is that if the Galvanized Wire is not cleaned before plating, the coating and Galvanized Wire The bonding strength of the matrix is poor, and dezincification is prone to occur. Therefore, the control of the quality of galvanized Galvanized Wire galvanized layer is very important.
The production process of electric Galvanized Wire is: pay-off→ pickling→washing→electroplating→cold water washing→hot water washing→drying→winding. The zinc sulfate salt is electroplated, the mass concentration of zinc sulfate is 400-600 g/L, and the pH of the plating solution is 2-4. In the electro-galvanizing process, the key factors affecting the quality of galvanizing are the cleanliness of the Galvanized Wire pickling and the concentration of the plating solution before the plating, the pH control and the current of the monofilament. The quality of pickling directly affects the bonding strength between the coating and the substrate. The mass concentration of the plating solution directly determines the rate of ion replenishment in the solution after ion migration and eliminates the concentration polarization phenomenon.
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