E-Coating

Jewelry Discussion
1

Does anyone have any on “E-Coating”. What is it? What is
the process?

2

Dear Marcus, could this be shortspeak for electroplating?

Kind regards,
Rex

3

E-coating is an industrial process that is used for high volume
aluminum, magnesium and zinc die castings. It is normally done in a
fluidized bed and the parts are conveyorized through it. Computer
disc drives are volume e-coated. It is normally black and gives a
thin surface similar to powder coating. There are few places in the
united states that still do it.

Dave Duncan

4

see: http://www.electrocoat.org
http://www.aircraftfinishing.com/evershield.htm there are several
other dip processes some that are applicable to jewelry .

jesse

5

Rex, thanks for your question. I should have specified more clearly
in the beginning. E-Coating is, I believe, Electrophoretic Coating
which is a process of coating metals with a very thin coat of clear
lacquer for protection.

From what little I have read on the web, it is a process similar to
electroplating but instead of plating with another base metal, the
coating is a lacquer.

There was a talk on this at the 2000? Santa Fe Symposium, but that’s
all I have been able to find out.

If anyone is using this process, or knows of anyone who has any
technical know how in this field, could you please post or contact me
via email.

Thanks in advance
Marcus Terrey

6 
I should have specified more clearly in the beginning. E-Coating
is, I believe, Electrophoretic Coating which is a process of
coating metals with a very thin coat of clear lacquer for
protection. There was a talk on this at the 2000? Santa Fe
Symposium, but that's all I have been able to find out.

Dear all,

There is a paper in the 1998 Santa Fe Symposium book (550-472)
titled “The use of cathodic electrophoretic lacquer coatings for
jewelry and jewelry finishes”. This paper was presented by Eric W.
Salomon. To wet your whistle I’ll give you a description of the
contents of this paper.

  Addressed will be the use of a durable, translucent
  electrophoretic lacquer coating that can be used on a variety
  of metals, both electroplated and polished jewelry items. This
  process will provide a clear, resilient lacquer coating with
  uniform coverage. The unbaked coating can also be dyed to
  produce a variety of lustrous colored finished, suitable for
  custom jewelry. A comparison with other protective coatings
  presently in use within the jewelry industry will be made with
  heath and environmental consideration.

I’m really not to familiar with this process but I do understand it
can be difficult to obtain consistent high quality results for SMALL
applications or shops. It looks to very involved.

I hope this helps,

Thackeray Taylor
Rio Grande Technical Support.

7

I have long been looking for a place to do electrodeposition of
lacquer on brass/copper/etc but was never able to find one that
would accept small quantities. They were more for industrial clients
or at least large companies. Would love to hear if anyone has any
experience with this.

Janet in Jerusalem