When using alkaline galvanizing additives for roll coating production, sometimes there may be obvious burrs on the coating of the workpiece, which affects the appearance of the workpiece. Where do the burrs on the galvanized layer come from?
Bigely Technology has conducted an analysis based on on-site experience and product characteristics, mainly for the following four reasons:
1.Processing issues of workpieces before electroplating. Some workpieces are not processed properly before electroplating, and the workpieces themselves have burrs, which can also occur after galvanizing.
2.The current density is too high during the galvanizing process. In the production process, if the current density is too high, the high current area of the workpiece will be burnt, which will give a feeling of burrs when touched by hand. At this point, by appropriately reducing the current density, the coating on the surface of the workpiece will gradually become finer and smoother.
3.The influence of solid impurities in the plating solution. Solid impurities in general plating solutions are mainly brought in by the dissolution of inferior zinc anodes. The zinc ions in the plating solution during production should be obtained by dissolving 0 # zinc ingot in a zinc bath, rather than by electrolyzing zinc to obtain zinc ions.
4.The workpiece itself is magnetized. Some workpieces make the substrate magnetic during the processing, and the magnetic field will affect the electric field during the galvanizing process, resulting in obvious burrs on the workpiece after galvanizing. When the workpiece is found to have magnetism, a demagnetizer should be used to demagnetize it before galvanizing to ensure good quality of the galvanized layer on the workpiece.
So, when using alkaline galvanizing additives for production, we should pay attention to the above four points, which can effectively reduce the occurrence of burrs on the workpiece, reduce the failure rate, and improve production efficiency. If you are interested in alkaline galvanizing additives, please contact Bigely customer service for free samples and detailed technical information!
