Electrolytic degreasing is the last degreasing process before the workpiece enters the plating process. In general, the form of mounting before electrolytic degreasing should have been determined, in addition to the basic requirements of mounting according to the plating parts, but also need to pay attention to a number of matters.
What are the requirements for mounting methods?
The mounting density, length and orientation of the workpieces are dependent on the requirements of both electrolysis and plating. It is not enough to think solely about electrolysis, but in some cases the mounting requirements for electrolyzed parts must be subordinated to the needs of the plating process.
If the electrolytic degreasing is adjusted before plating, the combination strength of the plating layer will be affected after several delays, so the plating production can not appear in this situation.
Generally the workpiece after degreasing is not allowed to contact with bare hands again, otherwise there is a high possibility of blistering of the plating layer, peeling, poor bonding and even the failure of plating at the place.
How to choose the material for the fixture to meet the requirement of electrolytic degreasing?
If the fixtures are used for electrolytic degreasing, copper can not be used to make the fixtures, otherwise it is easy to contaminate the plating solution.
Some workpieces in the electrolytic degreasing after the weak corrosion treatment, copper film on the copper fixture will be corroded in the electrolytic process, but the weak corrosion tank will continue to accumulate copper ions, when the workpieces in the weak corrosion tank treatment will be replaced out, the results will seriously affect the bonding strength of the plating layer, has been done on copper fixtures can be plated with a layer of nickel to be protected first.
Do a good job of mounting and hanging, you also need to choose a good electrode degreasing powder, so that the effect of degreasing can be brought out, Bigely's electrode degreasing powder BC-18, suitable for die-casting zinc alloy, copper, brass, bronze, other copper alloys, does not contain phosphates, low cost of wastewater treatment, and the use of good results in the 45-55 ° C low-temperature conditions.