Let's pick up where we left off, and talk about how to choose the materials to use in your hangers when using electrodegreasing powders.
Extended reading: "Do not want to affect the bonding strength of the plating layer, electrolytic degreasing do not use this kind of hangers".
For general conventional plating, with the exception of acid copper plating, hangers or wire ties with steel materials are possible and meet the requirements.
In general, steel hangers, except for the first time to be used, are generally plated, mainly nickel, because nickel is mostly for the last course of plating, plated copper is also mostly covered by nickel.
Hangers plated with zinc, cadmium, tin, lead, chromium, black nickel, etc., should be retired before the second use of the plating layer, so as not to contaminate the solution with these plating layers dissolved in the degreasing solution and affect the quality of the plating of the workpiece (the accumulation of these metal ions in the degreasing solution, the cathodic electrolytic degreasing process will be deposited in the workpiece, which will inevitably affect the bonding between the plating layer and the base material).
These are the choices of materials used for the hanger, what are the requirements for the structural form of the hanger?
As we know, near the electroplating before, electrolysis oil is an important purification process, the workpiece by electrolysis oil after the hot water, cold water cleaning and weak corrosion and its cleaning are electrolytic de-oiling of the incidental processes in order to prevent the workpiece oxidized again, these processes need to be carried out within a short period of time in a row, so that the form of hanging the workpiece hanging fastness have strict requirements.
When using Bigely's degreasing powders, plating factories must comply with the above requirements for the material and structure of the hangers, so as to do a good job of degreasing in the pre-treatment, to reduce unnecessary plating defects, and to lay a solid foundation for the quality of the subsequent plated products.