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Lubrication is one of the most
important aspects of
tribology (from the Greek tribos
= rubbing), defined as
“the science and technique
of surfaces working between
themselves with relative motion.”
Lubricants are substances in
different physical states and
of different nature, from hydrocarbons
to inorganic
substances and they can act under
different conditions
by the sliding of fluid, semisolid
or solid layers to cause the
formation of thin surface films
for physical adhesion or
chemical reaction between additives
contained in the
lubricant and the surfaces to
lubricate.
The reduction in the coefficient
of friction, the decrease
in the lubricant working temperature,
the limitation on the
noise generated by the equipment
and the capacity to
withstand high loads are elements
that can underline
these phenomena.
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