Summary for gold dye plating Discussion
gold dye and gold plating are different, and the thread’s main practical answer is that long-lasting gold dyeing for imitation jewelry can be done with EPL cover coating. Kandadai Ranga Kannan said the dyed finish with EPL coating could stand for about 2 years under normal environmental conditions. In a later explanation, the process was described as electrocoating/electropainting: DC electricity is used in a vat to deposit a thin, insulating paint-like coating on the parts, which can then be dyed before baking or curing. That even, very thin coating is one of its advantages. The answer also cautions that the method requires substantial capital cost and space, so it is better suited to jewelry manufacturers than to small jewelry shops or customer jewelers. The thread also includes follow-up questions asking what EPL means and how to learn the process, but no alternative method is given.
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Q. How is permanent dye gold plating?
Neeraj Kumar
– Najibabad UP, India
September 5, 2022
⇩ Similar, related, Q&As — oldest first ⇩
“Electrocoating: a Guidebook for Finishers”
by Electrocoat Association
on Amazon or
or
(affil link)
Q. Hi Everybody,
I would like to know what are the techniques of making long lasting Dyed gold plating which give life of 2 years on Imitation Jewellery, I heard China is using the same nowadays. Is it an open formula or technique available or someone has developed on his own. Pls,
Pankajkumar
exporter – Mumbai, India
2006
A. GOLD DYE AND GOLD PLATING ARE DIFFERENT. GOLD DYING (COLOURING) WITH EPL COVER COATING
COULD STAND FOR 2 Yrs UNDER NORMAL ENVIRONMENTAL CONDITIONS.
KANDADAI RANGA KANNAN
CHENNAI, TAMIL NADU, INDIA
2006
EPL = Electrophoretic Lacquer
i.e., Electrocoating, Electropainting, Cathodic Electrodeposition
“Electrocoats: Formulation and Technology”
by Bruggemann & Rach
on Amazon
or
or
(affil link)
Q. I am asking Kandadai Ranga Kannann what is EPL coating (covering), please let me know.
Saeedul Haque
gold plated jewelry – dhaka,dhaka, bangladesh
2006
Q. Hi, I’m harish and I’m a student in Mysore. I would like to know about EPL COVER COATING so please help me.
harish.r
Bangalore, India
April 9, 2010
Q. What is the meaning of EPL, and how to make a fake gold or other process of gold?
nitin prajapati
plating plant – Mumbai, Maharastra, India
September 10, 2010
Q. Dear sir,
we need gold dye processing for artificial jewelry.
khawaja Badaruddin, m.sc[chem]
Karachi, Pakistan
Q. Mr. KANDADAIRANGAKANNAN, Please brief detail about GOLD DYEING with EPL cover coating.
Babu Babu
Tamilnadu, India
May 16, 2011
A. Hi. Electrocoating/electropainting is a technology similar to painting, but in a way it is rather like electroplating because DC electricity applied to the parts while they are within the painting vat coverts the waterborne paint ions to permanent paint on the parts. Two advantages over competing technologies include the fact that it’s very thin (often about 0.0002″ thick), and that the coating is electrically insulating such that once there is a coating in one area, the electricity is directed to a different area, resulting in quite even paint thickness. Clear electrocoatings can be used and then dyed before baking/curing.
We have linked to several books on the topic to read more. Note that it involves rather substantial capital cost and real estate, so it’s a technology suited to jewelry manufacturers but not jewelry shops or customer jewelers.
Luck & Regards,
Ted Mooney, P.E. RET
Striving to live Aloha
finishing.com – Pine Beach, New Jersey
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