Marine Online
Learning objective the section are to
provide an understanding of the
performance of lubricants especially in
critical applications is largely
dependent upon the quality and
composition of the base oil quality of
base oils it influenced by origin
accrued oil feedstock type of refining
and severity process additive
combinations are selected with care to
ensure maximum performance and economic
benefits international oil companies
with extensive research facilities
require considerable expertise in the
development and application of lubricant
additives properties of lubricants can
be modified and improved by careful
choice of supplementary additives
beautiful base oil combinations are
selected to meet the anticipated
operation conditions the initial
selection of base oil is made in
accordance with their physical
characteristics such as viscosity
viscosity index poor point volatility
additives are normally added to satisfy
the predetermined performance
requirements when finalized the
lubricant will be subject to performance
tests such as oxidation stability where
tests film strength engine tests and
equipment manufacturers approval tests
mineral lubricants are normally based on
highly defined paraffinic or authentic
or oils or blend of both types
concentric base oils maybe preferred for
applications when mineral oils a
marginally satisfactory or do not fully
meet the specified performance
requirements but a two main grades of
mineral base oil
these are paraffinic base oils and
systemic base oils
additive the utilized as required to
supplement and enhance the inherent
properties of the base oil that's
meeting the predetermined performance
requirements of the oil formulation the
required
kids are initially dissolved in a small
portion of the total base oil volume by
means of mechanical jack or air blending
at a convenient temperature
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heating is carefully controlled to avoid
thermal decomposition of certain
components such as VP and file phosphate
anti-wear additives this additive
concentrate is then be canted into a
large tank and blended with the
remaining quantity of base soil samples
are taken and analyzed analysis confirms
that the blend it within the specified
test criteria such as viscosity
viscosity index flash and poor points
additive contents certain oil
formulations may require special
blending procedures you to additive
solubility considerations or
particularly critical quality
requirements
let us summarize the main topics of this
lesson lubricating oil is formulated
using suitable base oils and additives
chosen in accordance will be envisaged
conditions of operation and performance
targets the relative proportions of
selected base oils and additives are
carefully optimized to ensure best
possible performance in relation to the
set targets candidate oil formulations
are evaluated by a series of relevant
physical chemical and mechanical tests
prior to field trials concerning
acceptable performance