Electroplating wastewater treatment equipment Effect of additives in
The invention is widely used in agriculture and animal husbandry, industry, high and new technology, transportation, electronic equipment and other manufacturing industries and their daily necessities, and is a scientific research and processing process widely used by the product. The reason for the electroplating process is not only that the metal materials are not easy to erode, making the plastic products more durable, but also that the surface of such handicrafts is more beautiful and generous. It is precisely because the electroplating process commodities have such excellent properties that people around know that electroplating process commodities are very common.
Everyone is aware that a good electroplating product should have a smooth and smooth surface, be well proportioned, be applied without fading, rusting or falling off. In order to improve the performance and beauty of electroplating products, some preservatives are often added to improve the gloss and luster of products during the electroplating process. For example, in hot-dip galvanized products, blue zinc passivator, color zinc passivator, gray black passivator, etc. are often used. The efficacy of hot-dip galvanized passivator is to make products not easy to produce efficacy with carbon dioxide in the gas, which has the practical effect of blocking air oxidation.
Blue zinc passivation agent is added to make the electroplated parts deeper and brighter. At the same time, it also makes the electroplated products brighter and more uniform, and improves the commodity grade. Maybe it is also necessary to improve the impact resistance of the products in order to improve the firmness and corrosion resistance of the electroplated chips, and it can also play a role. Color zinc passivation can improve the smoothness of the hot-dip galvanized layer, improve the corrosion resistance of goods, and is not easy to flower, fade, and feel more fresh in the color of hot-dip galvanized parts. Gray black passivator refers to a gray black original film produced on the surface of the finished product, which makes the appearance of the product look more elegant.
Perhaps the electroplating additive is too high for the actual operation. The temperature, concentration value and PH of the aqueous solution are all harmful to the actual effect of the electroplating process. During the operation, it must be adjusted frequently and the safety operation procedures must be strictly followed. There are two main categories of preservatives in electroplating plants, one is organic chemical preservatives (such as coumarin used for nickel electroplating), the other is inorganic preservatives (such as cadmium salt used for barrel plating).
Most of the electroplating additives used were inorganic salts, which gradually took the leading position in electroplating additives. According to the function classification of electroplating additives, they can be divided into leveling agent, brightener, wetting agent, stress relieving agent, etc. Preservatives with different functions usually have different structural characteristics and efficacy principles. However, smart preservatives are also common. For example, saccharin can be used as nickel plating brightener, or as a common stress reliever; And preservatives with different functions also follow the same efficacy principle.
