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Blisters on Zinc-Plated Steel
How can we eliminate blistering on steel parts?
Ask an Expert Published: 10/24/2013
Zinc-Plated Pipe Fittings
We zinc plate then apply a yellow trivalent chrome conversion coat to pipe fittings. The rack-plated, large-size pipe fittings look great after plating, but a few days later start to show spots of corrosion. Do you have any suggestions for solving t...
Ask an Expert Published: 10/3/2013
Black Stains on Zinc-Plated Parts
Our rack alkaline-zinc-plated parts occasionally exhibit black or caustic stains that don’t show up for 24 hours. Can we add anything to our plating solution or rinses to eliminate this condition?
Ask an Expert Published: 7/24/2013
Matte Black Zinc Plating
What is the reason for using matte black zinc plating?
Ask an Expert Published: 6/3/2013
Zinc Corrosion
We have been experiencing white corrosion (zinc oxide) while our steel components are in storage. All of these assemblies are nitrogen-brazed components and then are subject to clear zinc plating.What do you think is the root of our problems?
Ask an Expert Published: 5/22/2013
Correction: Non-Electrolytically Applied Zinc Coat
My response in the February issue regarding General Motors specification GMW 3359 for non-electrolytically applied zinc-rich coatings was incorrect. Here is the correct answer.
Ask an Expert Published: 3/19/2013
Non-Electrolytically Applied Zinc Coat
Q. I recently received General Motors specification GMW3359 for non-electrolytically applied zinc-rich coating. Can you give me more information about this process?
Ask an Expert Published: 1/29/2013
Tin/Zinc Electroplating
What can you tell me about tin/zinc plating, and what kind of current density is necessary to get a consistent deposit on surfaces?
Ask an Expert Published: 1/2/2013
White Patches
What is a good remedy for white patches in an alkaline non-cyanide zinc plating bath?
Ask an Expert Published: 12/14/2012
Tin Plate on Zinc/Nickel Deposit
Our company produces components made from mild steel that are nickel/zinc plated. We have been asked to investigate the possibility of over-plating of a tin strip on these parts. Can this be done, and can it be done selectively?
Ask an Expert Published: 9/24/2012

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