Bearing hole repair process is as follows:
1.Cleaning, degreasing: treatment of the plated surface and the adjacent parts, degreasing with acetone.
2 attached to the transparent insulation tape paper to be coated surface on both sides, and play a protective role to prevent unnecessary electrochemical reaction.
Electric net treatment: electricity net fluid internal hole surface electrical net handle. Work connected with negative voltage of 10V, the machine speed 120r/min time is about30s-1min.
Activation: activation with the 2nd activation solution, the work piece then the positive voltage of 10V, ibid speed, surface uniform layer of black carbon to stop for about half a minute, rinse with water. Then Three Activator for activation, carbon black is removed, the performance of Cheng Lu silver, rinse, and then starting the plating.
Plated the bottom: with alkaline copper plating underlying the work piece connected with negative voltage of 10V, speed 120r/min.
Fast nickel plating size layers: the work piece connected with negative voltage 10V, the speed 120r/min to the required size to stay the grinding margin 0.03mm.
7 after plating processing: grinding the plated surface up to the required size and surface roughness requirements.