We all know that in the process of using alkaline galvanizing additives to galvanize hardware, it is necessary to analyze and adjust the concentration of zinc and alkali in the bath in time to ensure that the coating has good performance.Such as dispersing ability, depth ability and corrosion resistance.
Mr. Wu's company is a company engaged in the production of mechanical equipment and electroplating.They have relatively high requirements on the coating of the workpieces produced, and the bearing workpieces they have recently produced have poor adhesion of the coating after using electroless nickel plating solution.The potion supplier went to the site to adjust the plating solution several times, but the adhesion of the workpiece coating was still very poor and could not pass the adhesion test.
When we use alkaline galvanizing additives for production, the supplier's after-sales service attitude is poor or they can't rush to the scene to solve the problem quickly, which will greatly delay the production time and reduce production efficiency.
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.