Barrel Rotation Speed
We barrel plate fasteners using an alkaline zinc plating bath. We were told by the chemical supplier that the ideal rotation speed for fasteners is 6 rpm, but we believe we get more brightness at 12 rpm. Which speed is correct?
Q. We barrel plate fasteners using an alkaline zinc plating bath. We were told by the chemical supplier that the ideal rotation speed for fasteners is 6 rpm, but we believe we get more brightness at 12 rpm. Which speed is correct?—G.H.
A. The rotation speed recommended by your supplier is OK, but a greater rotation speed certainly will not harm your production. A greater rotation speed tends to give you a somewhat better distribution of the plated deposit. The only drawbacks that I am aware of when using greater speeds is that your barrels may require more frequent maintenance and, of course, delicate parts may be more readily damaged.
For more information, go to PFonline.com and search for “barrel rotation speed.” You will find multiple references to barrel plating and the various aspects to consider when doing this type of plating.
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.
Applications, plating solutions, brighteners, good operating practices and troubleshooting.
The processes, chemicals and equipment, plus control and troubleshooting.