Plating glitches, coarse, usually those causes, how to solve?

A: The coating glitches, coarse, mainly by plating suspended impurities caused by pollution. Their sources are: air, dust, anode sludge, metal impurities hydrolyzate. In addition, the bath composition and abnormal operating conditions and so undesirable. The solution is: alignment bath composition and operating conditions. If it is caused by suspended impurities, they should be filtered bath.
8 plating solution formulated the basic procedures How to:
A: The basic procedures for the preparation of the plating solution is as follows:
(1) will be required for a good amount of juice into the open chute before plating drugs (small tank) inside, then add the right amount of water dissolved careful not to drugs directly into the plating tank.
(2) solution of impurities can be cleared with a variety of chemical Molybdenum tube, and activated carbon treatment.
(3) stand a good solution has been processed, filtered into a clean plating bath, add water to a standard amount.
(4) regulate the plating process specification (pH, temperature, additives, etc.).
(5) Finally, the electrolytic deposition of a low current density in order to remove other metal ion impurities, until the solution is suitable for operation so far.
9 Why Gui has to be coated with an insulating material?
A: In addition to the general hook hanging with Tungsten eletrode and product contact with conductive parts, the rest should be coated with an insulating material to reduce the current loss and metal loss, ensure the effective area of ​​plating, improve the effective current, and to hang with durable.
10 sulfuric acid, hydrochloric acid descaling what effect? Nitric acid can rust?
A: The product rust generally the best use of concentrated hydrochloric acid, to achieve high efficiency, even if not caused by some long time produced a corrosion phenomenon of the base metal damage. Sulfuric acid to remove the surface rust stains better, but the rust is very slow, and has produced over a long time corrosion, greater damage to the product matrix. Nitric acid can not be used rust, its strong oxidation, i.e. oxidation of the metal case, a large amount of toxic nitrogen oxide gases.