Method for chemical nickel-plating of parts having a catalytic surface employing a vessel having an upper heated zone and a lower cooled zone

摘要

According to the proposed method, the upper layer of the working solution is heated and components restoring its concentration are added thereto, while the lower layer of the solution is simultaneously cooled and a reagent restoring the pH of the solution is added thereto. The installation for realizing said method comprises a bath composed of two communicating vessels mounted one atop the other. The lower vessel is provided with an arrangement for cooling the solution therein and with a device for feeding thereinto the reagent restoring the pH of the solution, whereas the upper vessl is provided with an arrangement for heating the solution therein and with a device for feeding thereinto the components restoring the concentration of the solution.