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Powder coating on the interior of an hydraulic tank?





August 30, 2010

Q. Dear sirs,

What is the best process for treating the inside surface of a hydraulic oil tank? Presently we are powder coating the interior surface. Is this OK? Will the powder coated surface react with hydraulic oil with a period of time?(say 20 years). will the powder coated paint peel off with oil?

Please help.

Regards,

Kuttappa I.G
Product designer - Bangalore, India



September 1, 2010

? Some powders might come off with some oils. You haven't told us what powder you use? Nor what oil is in use?
But why coat it at all? What is your reason for putting a coating on the inside of an oil tank?

geoff_crowley
Geoff Crowley
Crithwood Ltd.
Westfield, Scotland, UK
crithwood logo

September 2, 2010

A. The hydraulic oils I have come across contain some fairly aggressive solvents... I would suggest that you apply an epoxy based powder or even epoxy/phenolic powder (there are a few around). Anyone with any alternative ideas?

Terry Hickling
Birmingham, United Kingdom




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Do oil tank plates require blasting before painting?

September 9, 2015

Q. Respected Sir,
I just have a small question. I want to know whether fresh plates of a new oil tank require blasting process before painting?
Also, will blasting increase the roughness of fresh plates? If the answer is yes, is this preferred before painting?
Hope you will help me.

JOHN P ALAPPAT
NAFAL TRADING & CONTRACTERS-GHALA-MUSCAT - THRISSUR,KERALA, India



September 2015

A. Hi John. Although I don't know what kind of tank or oil you are referring to, or what material the "fresh" plates are made of (hot rolled, cold rolled, galvanized) ... I think the question is really whether pretreatment is required; and the answer is yes, proper pretreatment (phosphatization) is required before painting. So if the plates can be properly phosphatized without blasting, that sounds fine. Good luck.

Regards,

pic of Ted Mooney
Ted Mooney, P.E. RET
Striving to live Aloha
finishing.com - Pine Beach, New Jersey



October 22, 2015

A. Hi John. I agree with Ted's comments. Depending on the media used, the roughness will probably increase. Blasting is sometimes preferred for this particular application but there are other methods that can be used to prep the material for further processing.

blake kneedler
Blake Kneedler
Feather Hollow Eng. - Stockton, California


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