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-----Metal Finishing
1998
Tom,
By way of introduction, I am Bill Toughey (Toohee) of Durban, South Africa.I was recently browsing on the net and came across your article on "20 ways to cut water usage in the plating shop". Due to our high focus on environmental issues in SA, we are doing "value analysis and engineering" on our processes and your article has confirmed some of the practices we are adopting.
The reason for my communication is really to seek advise. One of my customers has asked me for the destruction/melting point of zinc and nickel coatings on electrical components.We manufacture an electrical pin for a plug connector on an electrical appliance. The coatings are either zinc or nickel on a substrate of steel or copper. The customer fears that heat generated from poor contact between plug and socket may cause the coating to deteriorate. He has asked me to provide the temperature at which this will occur. I have found that discolouring takes place at temperatures below the melting points of either metal and that the surface does appear to lose its protective ability, hence I am reluctant to provide those well known and easily sourced figures.
I do not have the facilities to do salt spray tests at different temperatures, etc. and I am wondering if you are at all aware of test results or standard tables that would solve my problem.
I know it may appear forward to be approached in this manner but I believe in the motto "who dares, wins".
I would be most grateful for any info you are able to provide. look forward to hearing from you. Bill.....?
Bill Toughey- Durban, South Africa
1998
Dear Bill:
This is a very interesting topic since water is critical in our country, and if no water, there is no way at any price we can make water but raining.
If possible, please e-mail me a copy of "20 ways to cut usage of water"
Sincerely,
ALFREDO F. GARZA- H. Matamoros, Mexico.
"20 Ways to Reduce Water Usage" is on line in our library.
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
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