When using galvanizing additives, uneven coating is the main problem leading to the low first-time galvanizing qualification rate of products. So, what hazards can uneven coating cause? Then how should it be solved?
Some electroplating factories find that the thickness of the electroplating layer on the parts is uneven during the inspection after electroplating, and the thickness of the coating on the same part varies at different positions. In addition, the appearance of the coating is uneven. After installation, if it is exposed to the air for a long time or in a humid environment, some slight spots, pinholes or pockmarks will appear. As time goes by, the defects will gradually enlarge, which will affect the appearance and performance of the electroplating layer, especially the functional characteristics of the workpiece will also be affected.
In addition, for some electro-galvanized parts, after passivation, the passivated surface is discontinuous. Once the unpassivated areas gradually corrode out of control, it will also interfere with the usage characteristics of the parts.
The number of electroplated parts in a single electroplating process is an important factor affecting the uniformity of the coating. If too many parts are electroplated into the tank in a single electroplating, it will cause the coating on the surface of the parts to deposit, resulting in uneven and rough coating problems on the surface of the parts.
Therefore, in order to enhance the uniformity of the coating, we need to use high-quality galvanizing additives. The galvanizing additive BZ-518 from Bigely, when added to the bath solution, can increase the cathodic polarization degree, allowing the current to be evenly distributed in the system, thereby improving the dispersion ability of the plating solution and obtaining a coating with a fine structure and high smoothness.
About us
Guangdong Bigely Technology Co., Ltd. ,founded in 2003, is a high-tech enterprise integrating R & D，production, sales and service, specializing in the production of electroplating additives. As a famous electroplating additives source manufacturer in China, our products are widely used to meet the plating needs of different industries and exported to many countries from all over the world. They can meet the environmental protection standard after use, mainly used in automobile parts, sanitary ware, electronic products, hardware, furniture, building accessories and other fields.
If you need our high-quality electroplating additives, please contact us. We can provide you samples for test, and also provide a series of services.
