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Excessive E-coating sludge

Hi

I'm working in an automotive paint shop in Malaysia. I'm having problem ED paint accumulated like gel at my final DI water rinse(post e coat). This gel always get stuck at the nozzle and causing quality problem.This gel cannot be eliminated by using organic acid like acetic acid ⇦ on eBay or Amazon [affil link] . Can someone suggest to me how to remove this gel and how to minimize this gel from occurring at my final DI water rinse

Affandi Kamalul
Automotive paint shop assistant manager - Rawang, Selangor, Malaysia
July 30, 2009

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Please check the pH of the DI water tank. If the pH is high the small amount of carry over paint will 'gel'.

A very small quantity of pH controller is sufficient to drop the pH to acceptable level.

Hope this helps.

Gurvin Singh
Mohali, Punjab, India
August 26, 2009

The pH for my final ED DI water rinsing is 5. Can anybody suggest what is the ideal pH for the final ED DI water rinsing

Kamalul Affandi
- Rawang, Selangor, Malaysia
September 15, 2009

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November 24, 2011

Final D.I Water Power of hydrogen= 5.5 to 6.5
and CONDUCTIVITY= 5.0 you temperature =room temp
but now tell me CLEANING CYCLE of D.I tank

Waseem Kahn
- Sindh, Karachi, Pakistan

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