Mr. Luo's factory is galvanized for small hardware parts. Many workpieces are to be galvanized and color passivated, and they have the appearance of hexavalent chromium color passivation.However, in the face of the constraints of environmental protection policies, the use of hexavalent chromium color passivators for galvanized is prohibited, and Mr. Luo has to use galvanized trivalent chromium color passivators.
Mr. Chen's barrel plating line using potassium chloride galvanizing additive has been stable.However, in the past few days, it was found that the coating of the plated workpiece in the low current area was slightly yellow, and the serious part was gray-black.Although the effect after light emission will be better, but the passivation film has yellowing phenomenon after blue-white passivation treatment. What is the reason?
In the production process of using bright nickel plating additives, the correct adjustment of the pH value of the plating solution is very important. If the pH value of the plating solution is not adjusted properly, the coating quality of the workpiece will be affected.Two days ago, after adjusting the pH value of the plating solution in Mr. Chen's nickel plating tank in Shantou, the coating of the workpiece was relatively rough, and some pinholes appeared.
In the production process of using nickel plating brightener, the maintenance and management of the plating solution is very important.Sometimes the operation of the field operator is not standardized, which will bring a lot of trouble to the production.Such a thing happened in Mr. He's production line in Dongguan.
In the production process of using nickel plating additives, sometimes the parameters such as the composition of the plating solution and the operating conditions are normal, but the coating will appear fine spots, which affects the coating quality of the workpiece.Mr. Lin from Chaozhou encountered such a situation. Does it have anything to do with the nickel plating additives used?
Sometimes when we use medium phosphorus electroless nickel plating solution for production, we obviously control the process parameters within the working range according to the product instructions, but the plating solution is still easy to decompose, which is very distressing.