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Interesting Facts you should know about steel and prepping
it before you coat it with POR-15:
In every car manufacturing facility, steel in
different parts of the car body often comes from different steel mills and
different production lots, and the surface texture varies with the condition of
the steel mill rolls which cold roll the steel to its final thickness. Also,
surface cleanliness varies with the mill’s cleaning procedures, especially the
procedures used to control carbon smut. Often, carbon smut is
actually baked onto the steel during the high temperature annealing process
which follows rolling. This carbon smut is impossible to remove except by
mechanical abrasion. Rust varies with the care taken in handling (1) at the
steel mill, (2) during transportation and storage, and (3) during fabrication.
Steel stored for a long time with rust inhibiting oil will react to form an
incomplete oxide known as oil stain. The result of all this is
that ordinary steel varies widely in the manner in which it accepts
coatings. Although some commercial steel provides an excellent surface
for coatings, you are just as likely to find steel which gives poor adhesion and
poor rust resistance, even with good coatings. Often the same mill will produce
both very good and very poor surface quality, depending upon a number of
uncontrolled factors. Nearly all the above problems can be overcome by using
POR-15 Metal-Ready before you coat your steel with POR-15 Rust Preventive
Paint.
Think of Metal-Ready as an inexpensive
insurance policy that guarantees perfect adhesion of POR-15 to
any metallic surface every time. Whether you paint your car or your
fence or your outdoor furniture, the problems are always the same, because you
don’t know anything about the steel you’re painting or what mill it came from,
and you can’t learn anything by just looking at it even if you have perfect
vision! |
