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topic 11835

Design of anodes for consistent precision hard chrome plating


(2001)

I need some technical documentation on the design of anodes for consistent precision hard chrome plating and build up.

JAY F. MATHEWS
research corp - Hill AF Base, Utah, USA


(2001)

One source for the information you seek is AESF. They have a training course on Chrome Plating for Engineering Applications where rack design and configuration are discussed in depth. You may be able to discuss your needs with a reputable rack manufacturer. Your final option is to ask a consultant to evaluate your needs and design requirements. Best of Luck.

Ira Donovan, M.S.F.
Kansas City, Missouri


(2001)

I would strongly recommend Chrome Plating /simplified from Hard Chrome Consultants in Cleveland, OH. A third of the book is BS and back slapping, but it is an excellent practical down to earth book. You can increase the effectiveness of the anode, but no lead based anode remains "good" forever! Even if they are well taken care of and retain the black coating--Definitely not the yellow coating-- they will have a drop off in efficiency after a number of runs. Recasting the anodes is not expensive when you consider the alternative of an under plate on an aircraft part, or arbitrarily running excessively long times and having to grind off all of the excess.

James Watts
- Navarre, Florida


(2001)

Jay,

I know naught about plating and a little about plastics.

If you are after precision plating, MAYBE you have some parts with weird sizing. In which case, let's assume we are talking about crankshafts, you could have your plating tank made somewhat to the convolutions of your parts in order to achieve, perhaps, a similar 'throw distance' between them and the anodes to achieve constant and even plating.

Just some food for thought ... and yes, I have seen tanks made like that and presume it was for an intelligent reason. Unfortunately I never made any like that. You could easily make them in PVC reinforced with fibreglass (so-called dual laminates)and could run them @ l60° F whereas PVC by itself is only about l0% of tensile @ l40° F. and not suitable for chrome tanks because of the temperature. Moreover this way would far less expensive than making steel tanks and lining them!

freeman newton portrait
Freeman Newton
White Rock, British Columbia, Canada

(It is our sad duty to
advise that Freeman passed away
April 21, 2012. R.I.P. old friend).




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