Lubrication study guide Flashcards
Lubrication
is the process of maintaining a fluid film between solid surfaces to prevent their physical contact
coefficient
is the measure of frictional force between two surfaces in contact.
Chemisorption
is a chemical adsorption process in which weak chemical bonds are formed between liquid or gas molecules and solid surfaces
Inert gases
gases that lack active properties
Friction
the force resisting the relative motion of a solid surface, basically always acts in the direction opposite to that of motion
Viscosity
is the measurement of the resistance of a fluid’s molecules to move past each other
Shear strength
a liquid’s ability to remain as a separator between solids in motion
spectrometer
a device that vaporizes elements in the oil sample into light
petroleum fluid
a fluid consisting of hydrocarbons
Torque
the tendency of a body to rotate as a result of a force being applied at some distance away from the center of rotation
Fluid lubricants must
create a film or wedge between material surfaces to prevent contact with each other
Force
is a push or pull acting on an object
Oil film thickness
decrease with an increase in oil temperature
The grease dropping point
the maximum temperature a grease withstands before it softens enough to flow through a laboratory testing orifice
higher viscosity rating number
the thicker the oil.
