A customer inquired that in the production process of using zincate zinc plating additive, the deep plating ability of the workpiece galvanized layer is poor, especially for workpieces with complex shapes or deep blind holes. What is the cause of this phenomenon? Woolen cloth?
Bigley Technology has made an analysis based on the field experience and the characteristics of the product zincate zinc plating additive BZ-518. The following four factors affect the deep plating ability of the plating bath during the production process:
1. Zinc plating bath has high alkalinity and low alkalinity. When the concentration of zinc ions in the plating solution is high, and the concentration of sodium hydroxide is low, it will obviously affect the deep plating ability of the plating solution. Therefore, we should analyze the concentration of the main salt of the plating solution in time during production, and control the zinc-alkali ratio between 1:10-12.
2. The bath temperature is high or the current density is low. When the temperature of the plating solution is high, the adsorption effect of additives is poor, the brightness of the coating is poor, and the dispersion ability and deep plating ability are poor; and when the current density is low, although the coating is fine and soft, the deposition speed is slow and the production efficiency is low. Especially in the low current area, a good galvanized layer cannot be obtained. Therefore, we should strictly control the temperature and current density of the plating solution within the process range during the production process.
3. The concentration of additives is low. When the concentration of additives in the plating solution is low, the leveling and positioning performance of the galvanized layer cannot be well adjusted, resulting in poor deep plating ability. Therefore, we must control the concentration of additives in the process range during the production process.
4. The quality of additives is poor. Some zincate zinc plating additive on the market are of poor quality and have more decomposition products during the production process. As the production progresses, more and more organic decomposition products are consulted, which will seriously affect the dispersion and depth of the galvanized layer. Plating ability. Therefore, when purchasing, we should choose the additives of big brands, such as this BZ-518 from Bigley, which guarantees the quality of production.
Therefore, we should pay attention to these 4 points in the production process of using zincate zinc plating additive to ensure that the dispersibility and deep plating ability of the workpiece galvanized layer are good. If you are interested in zincate zinc plating additive, please contact Bigolly customer service for free samples and detailed technical information!