Copper In My Chromium Tank
Question: How can I remove copper from my chromium-plating tank?
Question:
How can I remove copper from my chromium-plating tank? A. J.
Answer:
The best way of doing this is to try to reduce the amount of copper that is being introduced into the plating tank. If this is not feasible, there a few routes you can take. One is to remove a portion of the chromium-plating solution and then bring the remainder of the solution back to specifications by adding water, chromic and sulfuric acid. The major problem with this classic approach is you now have excess plating solution that must be disposed of properly.
A preferable method is to use ion exchange or electrodialysis. These methods are environmentally attractive and reduce the amount of waste material that must be disposed. Vendors of this type of equipment can be found in the Products Finishing Directory & Technology Guide, 2003 edition, under Ion-Exchange Equipment (page 381) and Electrodialysis Equipment (page 358).
Related Content
-
How to Choose Between Sulfate and Chloride-Based Trivalent Chromium
There are several factors to consider when choosing between sulfate and chloride-based baths for trivalent chromium plating. Mark Schario of Columbia Chemical discusses the differences and what platers should keep in mind when evaluating options.
-
Possibilities From Electroplating 3D Printed Plastic Parts
Adding layers of nickel or copper to 3D printed polymer can impart desired properties such as electrical conductivity, EMI shielding, abrasion resistance and improved strength — approaching and even exceeding 3D printed metal, according to RePliForm.
-
How to Maximize Nickel Plating Performance
The advantages of boric acid-free nickel plating include allowing manufacturers who utilize nickel plating to keep up the ever-changing regulatory policies and support sustainability efforts.
