Cyanide copper plating failure and its treatment: rough coating. 

 

 

 

 

 

 

 

 

 

 

(1) the cathode current density

see the fault phenomenon l (2) the reasons for analysis and solutions;

(2) with dust in the air

Solution:

  1. The tank is not produced, the cover to prevent, strengthen the continuous filtration;
  2. Keep the workshop clean air, and use the ventilation facilities, forced exhaust;
  3. Stirring the air, with activated carbon adsorption filter to reduce the oil and particles with people;

 (3) automatic part of the mobile line of dirt into the tank

solution:

  1. Strengthen equipment maintenance, slow down the equipment corrosion, and keep the equipment clean;
  2. In the equipment design, installation to minimize the hot acid and alkali gas on the equipment corrosion, and good anti-corrosion facilities

(4) linked to a metal crumbs fall, fell in the top parts

 Solution:

  1. Regular repair linked to ensure that linked with no damage, no nodules, no loose coating;
  2. Hanging on the operation, to avoid the upper part of the workpiece hanging hook, so as not to form a loose plating plating, moving or air mixing process fell to the top of the workpiece;

(5) the anode has dirt (copper oxide)

solution:

  1. In the upper part of the workpiece, Use double-layer anode bag and check for damage;
  2. Regular cleaning anode copper and anode bags, do the scheduled maintenance work;
  3. When the anode bag is installed, it is ensured that the bottom of the anode bag has a distance of 3 to 5 cm from the bottom of the anode so that the anode sludge sinks to the bottom of the bag and the anode pocket is higher than the liquid level to prevent the anode sludge from spilling. d. To avoid the liquid of the filter outlet pipe directly to the anode;
  4. Strict process specifications and process parameters to prevent the anode passivation, the sludge generated into the tank

(6) filter material leakage

Solution:

  1. Reasonable choice filter and filter media to prevent leakage;
  2. Strengthen the maintenance of the filter to prevent the occurrence of dripping phenomenon, to ensure that the filter effect. Recommend the best filter effect of the chemical filter.

(7) the copper layer is too thick

solution:

strict standard operations, to ensure that the quality of the coating, reduce costs, to ensure that the filter effect, to ensure that the filter effect