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Electrocoat over Zinc-Plated Steel—Revisited
I wonder why you think the automotive community should be questioned for specifying a zinc or zinc alloy prior to E-coat. Performance testing done by all the major OEMs will confirm better corrosion performance with zinc or zinc alloy than with a ph...
Ask an Expert Published: 9/1/2009
Anodic or Cathodic E-Coat?
I recently heard about a company using an anodic E-coat on castings, and that it cures at a much lower temp. If the anodic E-coat takes less energy to cure, why isn’t it more widely used?
Ask an Expert Published: 6/1/2009
E-coat As A Primer For Powder
The spec called for electrocoat as a primer and a powder coating for the top coat. We have liquid and powder coating facilities in our plant, but we will have to send the parts to a contract coater for the E-coat process. Can you tell me why the E-c...
Ask an Expert Published: 6/1/2009
E-coating Over Zinc-Plated Steel?
The print calls for the part to be zinc plated before application of a cathodic epoxy E-coating. The customer apparently feels that the zinc plating will provide an additional level of corrosion protection. However, we have sent requests for quote t...
Ask an Expert Published: 6/1/2009
Back to the Basics
For some reason, many of our questions seem to be focused on an effort to gain a better understanding of the principles behind an E-coat system. I’ve recently been engaged in an interesting e-mail dialogue with one reader in particular. Following is...
Ask an Expert Published: 3/1/2009
Back To The Basics
Perhaps it’s a sign of the times. Perhaps it’s the state of the economy. For some reason, many of our questions seem to be focused on an effort to gain a better understanding of the principles behind an E-coat system. I’ve recently been engaged in a...
Ask an Expert Published: 3/1/2009
Clear E-coat vs. Anodizing
I can not find a specification for clear E-coating on aluminum castings. Can you help?
Ask an Expert Published: 12/1/2008
PAINT CONVERSION BY TOP-FEEDING
What is your opinion on converting from one company’s epoxy E-coat paint to another supplier’s paint by top-feeding?
Ask an Expert Published: 12/1/2008
Pinhole size air pockets
Do you have any ideas on how to get rid of pinhole size air pockets in the coating?
Ask an Expert Published: 12/1/2008
Powder Coating over E-coat
I am aware of applications where liquid paints are being applied over E-coat, but I am wondering about the feasibility of applying powder coating. Will the powder coating stick well to the E-coat? Could you give me some guidance on that?
Ask an Expert Published: 12/1/2008

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