Stripping Defective Copper Plate
Question: What is the best way to strip copper from steel?
Share
Question:
What is the best way to strip copper from steel? S.H.
Answer:
I am not sure there is one best way of doing this. One formulation that is used consists of a solution of sodium cyanide (12 oz/gal) and sodium hydroxide (2 oz/gal). Use this formulation at room temperature making the part to be stripped anodic. A voltage of 2-6 volts is recommended.
Featured Content
Another standard formulation uses chromic acid (64 oz/gal) and sulfuric acid (4 fl oz/gal) at a temperature of 120-130F. Both of these processes can cause pitting of the steel substrate upon prolonged exposure to the stripping baths.
Another solution that I personally prefer is to use a proprietary stripping solution. Proprietary systems tend to give more consistent results with much less aggravation. You can obtain information on these processes by going to the Suppliers page at www.pfonline.com or looking in the Products Finishing Directory and Technology Guide under Stripping Solutions, metal.
RELATED CONTENT
-
Stripping of Plated Finishes
The processes, chemicals and equipment, plus control and troubleshooting.
-
Masking for Surface Finishing
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.
-
Copper Plating on Aluminum and Aluminum Alloys
How can I plate copper on aluminum?
