Electrocoating
Excessive Metal Content in Bath
The chemistry manufacturer did a “metals analysis” of our bath and reported iron content at 1,420 mg/L. Is there any other way of removing the iron other than dumping the bath and making up a new one?
Read MoreElectrocoat 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 phosphate base. I think you should revisit your response.
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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?
Read MoreE-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 to three E-coaters and they have all elected to no-quote the project because of the zinc plating.
Read MoreE-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-coat process might be required instead of a liquid process?
Read MoreThe Primary E-coat Product Types
You mentioned an anodic acrylic E-coat. What other types of E-coat products are there and can you give me an idea about where they’re used?
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