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In the production process of using nickel plating additives, when electrolytic treatment of impurities is required, how should the temperature and pH value be selected?
When using hard chrome additives, how should the concentration of chromic anhydride and trivalent chromium be controlled to ensure good production benefits?
In the field of precision manufacturing, quality disputes caused by insufficient hardness of plating are common. A plating plant has feedback, customer requirements for steel workpiece hardness after nickel plating ≥ 40HRC, but the traditional process after plating only 35HRC, heat treatment barely meets the standard but accompanied by the risk of brittleness. This plating hardness and toughness of the contradiction, just the direction of the breakthrough in the phosphorus chemical nickel plating solution.
When using nickel plating brightener, are you often troubled by iron impurity contamination? Is it that after using electrolysis method, not only can't completely remove impurities, but also lose a lot of nickel salt? Is not the use of impurity remover but become serious, iron ions can not sink, the plating solution becomes cloudy, add hydrogen peroxide to adjust the PH also can not? This article will tell you how to solve the problem.
When using alkaline galvanizing brightener in a plating plant, what is the best current density to control if you want to remove heterogeneous metal impurities by electrolysis?
When conducting the Hull cell test with acid copper plating brightener, how should it be stirred? What benefits can stirring bring? Why does improper stirring lead to a decline in the quality of the coating? Why is it so difficult to clean the Hull tank with air stirring thoroughly after each use? All the answers will be given to you in this issue's articles.
