What is the reason for the slow deposition efficiency when we use alkaline galvanizing additives?
Low zinc concentration
Zinc ions tend to deposit and grow in areas with high zinc concentration. If the zinc concentration in the plating solution is low, then it will definitely affect the normal deposition efficiency of the zinc layer, and for this reason, plating plant technicians need to increase the zinc concentration in the plating solution. When using alkaline galvanizing additive Zn-218, the zinc concentration needs to be controlled at 8-15 grams per liter.
High concentration of brightener
Many electroplating factories in order to improve the brightness of the coating, always like to blindly add brightener into the bath, but it is often easy to cause other problems such as slow deposition, to solve the problem, you need to reduce the concentration of brightener.
Excessive acidification
Excessive acid leaching is likely to cause excessive corrosion of the workpiece, the surface of the workpiece is uneven, which naturally affects the normal deposition efficiency of the zinc layer. For this reason, we recommend that the acid leaching time needs to be controlled, and the concentration of the acid leaching solution also needs to be checked to see if it is excessive.
Low temperature
Temperature conditions also have an effect on zinc deposition, a higher working temperature is conducive to increasing the rate of zinc crystallization growth, thereby increasing the rate of deposition, when the temperature is lower, the rate of zinc deposition is significantly reduced, and even the phenomenon of zinc plating can not occur, in the use of alkaline zinc plating additives Zn-218, the plating plant technicians need to control the temperature of about 25 ℃.
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, Bigely Technology is a national high-tech enterprise with a strong research and development team, which has over 10 engineers with more than 20 years' working experience in the electroplating industry.
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.
