Re: [MW:8553] Pin holes in Final coating

Mr sundaram

 

Details are not sufficient about coated surface, coating material and number of layers

Anyhow, dew point, relative humidity, selection of nozzle, viscosity of coating material , mixing ratio of coating matrial  and  application method etc., are  criteria for such  pin holes.

 

If you feel this is sudden issue  , then concentrate with  RH

 

T.Mahendran
ACC - power plant

KSA.

00966 - 0593423 767

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From: Sundaram Sundaram <nss2410@gmail.com>
To: Materials & Welding <materials-welding@googlegroups.com>
Sent: Tue, December 7, 2010 9:06:49 AM
Subject: [MW:8549] Pin holes in Final coating

Hi friends,
                After the finaal coating i have found large number of
pin holes on the surface.Can anybody explain what is the reason.

with regards & thanks,
sundaram

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