Summary for edp process Discussion
EDP process refers to electro-deposited paint, also called electrocoat, electropainting, e-coating, or cathodic electrodeposition. In the thread, Sony Firdaus asks for an explanation of the process for aluminium and how it differs from powder coating. Gurvin Singh explains that the coating chemicals are mixed in a water bath, the part is made anodic in the anodic process or cathodic in the cathodic process, and the coating is deposited when current passes through the bath; the part is then cured in an oven. He notes that a key advantage over powder coating is the ability to produce extremely thin coatings and achieve 100% coverage, because the deposited paint is insulating and helps steer current toward uncoated areas. The discussion is brief and does not mention major drawbacks or limitations.
Q. I am looking for an explanation for EDP Process (some kind of electrical coating process) for the aluminium material. What is the differences between this process and powder coating?
Sony Firdaus
PT. Dharma Polimetal – Jakarta, Jakarta, Indonesia
2003
“Electrocoating: a Guidebook for Finishers”
by Electrocoat Association
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A. Electro Deposited Paint also called Electrocoat is probably what you are looking for. The chemicals are mixed in a water bath.
The component is made anodic in the anodic process and cathode in the cathodic process (CED).
On passage of current the coating is deposited on the component. It is cured in an oven.
Gurvin Singh
Mohali, Punjab, India
2003
A. Hi Sony. The process is also called electropainting, e-coating, or cathodic electrodeposition. Some advantages compared to powder coating include the ability to do extremely thin coatings, and the ability to get 100% coverage because the deposited paint is insulating, which keeps the current steered towards any uncoated area.
Regards,
Ted Mooney, P.E. RET
Striving to live Aloha
finishing.com – Pine Beach, New Jersey
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