In the production process of electroplating, do you have such a distress: workpiece after zinc plating after trivalent chromium blue zinc passivation, placed for a period of time the surface will be yellow, seriously affect the quality of the product, the customer will not accept such a product, then what to do?
Bigely Technology has developed a non-yellowing trivalent chromium blue zinc passivator BZ-212 to solve the phenomenon of yellowing after galvanizing passivation of the product, with the following specific features:
1, passivator operation range is wide. pH value of 2.0-2.8 range can be stable production; passivator temperature in the range of 20-30 ℃ deviation is not big; passivator concentration can be according to the needs of the production, in the 30-70ml/L can meet the production; passivator passivation time can be according to the customer's needs in the 20-60s to make appropriate adjustments.
2、Passivator has higher tolerance for impurities. When the iron ion impurity in the general passivator working solution reaches 30ml/L, the passivated products will be yellow and foggy; while the iron impurity in the BZ-212 passivator working solution reaches 80ml/L, the products will not be yellow.
This is the main feature of this non-yellowing trivalent chromium blue zinc passivator BZ-212. However, the main thing is needed is that the water washing tank after passivation should be changed diligently to avoid the acidity of the water washing tank is too large; the product after passivation after baking aging to ensure that the product baking time is long enough to thoroughly bake dry the water on the surface of the workpiece. If you are interested in trivalent chromium passivator for galvanizing, you can find Bigely to learn more.
