We are manufacturer of brass wire and need some help from you.
We need to know you the best solution for pickling brass wire and nickel silver (plated?) wire. Some people have said that sodium cyanide is best to remove tarnish and discoloring of the metal. Is this true?
Please also inform us if we should really use sodium cyanide for pickling because it is a dangerous chemical
Which lubricant is best for carbide drawing dies? What is the solution for removing residual oil and lubricant on nonferrous metal like brass and copper wire.
Copper Drawing Lubricant
The web site is www.richardsapex.com/worldop/australasia.html
Cleaning Silver and Brass
I personally would never use something as dangerous as sodium cyanide. Assuming you are electroplating the the nickel and silver on copper or bronze wire, I suggest you discuss this in depth with your electroplating machine manufacturer to get their latest cleaning recommendations. I am confident that there is something a lot more environmentally friendly and safe than something as dangerous as sodium cyanide. The MSDS for sodium cyanide is here www.sciencelab.com/xMSDS-Sodium_Cyanide-9927711
I am also confident that your electroplating machine manufacturer can also recommend strategies and simple coatings to prevent tarnishing and discoloring of inventoried silver and nickel plated wire.