The importance of surface preparation would seem so
fundamental that it would not deserve mention in specifications; however, poor
surface preparation is a major contributing factor of many coating failures.
Technical Data used in the field explained in petroleum courses in
Rawalpindi. Detailed instructions should be given all along the line
and steps taken to see that they are carried out properly. Basically, no
coating can be better than the surface over which it is applied. If that
surface is dirt, grease, moisture, mill scale, rust, concrete dust, or any
other forcing or interference material, failure can be expected.
These substances, forming a film between the surface
and the coating, soon break down and fall away, taking the coating with them.
Such failures cannot be called coating failures. Some more details of petroleum courses
in rawalpindi are as under.
The type of surface preparation required on various
surfaces is determined by (I) the nature of the surface itself. the
operating conditions to which such surfaces will be subjected, and (3) the type
of coating to be applied to the surfaces. As a general rule. metal surfaces
that are to be submerged require more thorough surface preparation than those
areas that will be no submerged. The more severe the corrosive
atmospheric elements will be, the more thoroughly surface preparation must be
carried out. Certain coatings have a better bonding quality than others. Once
recognition is given to the un equalness of bonding qualities, it is then a
relatively simple matter to be certain that the correct type of surface
preparation is carried out, as required, for the various coatings. TSK Training
for Skills and Knowledge is the best institute in Rawalpindi Islamabad for
Pakistani Students who wants to join oil field after petroleum courses
in Islamabad.
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