“Whitewash” Again
Question: I have a small chrome plating shop. I have problems when plating larger parts, such as bumpers.
Question:
I have a small chrome plating shop. I have problems when plating larger parts, such as bumpers. The center areas come out with a gray haze or a “whitewash” appearance. I do not have this problem when I plate smaller racked parts. Can you help me solve this problem? J. B.
Answer:
This is a common problem and can be caused by a number of different things. Since you mention that this problem only seems to happen when plating large pieces, I would investigate whether you have the proper current density and temperature for your plating bath. Placing a large piece into the plating tank will change the current density and the temperature of the bath and may be causing the problem.
There are two excellent papers available on this subject. They can be found on www.pfonline.com/plate. In the search box type in whitewash and you will find the papers listed.
RELATED CONTENT
-
Copper Plating on Aluminum and Aluminum Alloys
How can I plate copper on aluminum?
-
An Overview of Electroless Nickel Plating
By definition, electroless plating is metal deposition by a controlled chemical reaction.
-
Gold and Silver Plating Basics
An overview of precious metal electroplating processes.