Q: Is there any way to bulk electropolish smaller parts? We have received requests to electropolish parts that are small and difficult to individually rack. We were thinking of using a barrel technique to do this. Will it work? P.C.
A: I am not aware of any methods for bulk electropolishing. Trying to perform electropolishing in a barrel has a number of problems. The first one is that the current requirements for electropolishing in a barrel would be extremely high. The second problem is the tumbling of the parts would probably damage or change the appearance of the parts. More importantly the tumbling action in the barrel would remove some of the polarization film that is required when electropolishing.
Masking is employed in most any metal finishing operation where only a specifically defined area of the surface of a part must be exposed to a process. Conversely, masking may be employed on a surface where treatment is either not required or must be avoided. This article covers the many aspects of masking for metal finishing, including applications, methods and the various types of masking employed.
Choosing the best process for your operation.
An alternative product for passivation...