An anti-vibration compound is a temperature-resistant mixture of a liquid with fine particles, which is used to reduce
oscillations in
calender
A calender is a series of hard pressure rollers used to finish or smooth a sheet of material such as paper, textiles, rubber, or plastics. Calender rolls are also used to form some types of plastic films and to apply coatings. Some calende ...
rolls
and to dampen
vibrations in fabricated structures like machine beds and housings.
Use
Vibration may limit the performance of a calender or
paper machine. It can have numerous sources such as bulk variations in the sheet,
bearing problems, or misalignment of the
driveshaft. Vibration manifests itself as a high frequency periodic movement of the roll body with an amplitude from less than one to several µm.
When anti-vibration compound is introduced to the center bores of the rolls, vibration is transferred from the solid roll structure to the incompressible
fluid
In physics, a fluid is a liquid, gas, or other material that continuously deforms (''flows'') under an applied shear stress, or external force. They have zero shear modulus, or, in simpler terms, are substances which cannot resist any shear ...
component of the anti-vibration compound. Its solid particles are less mobile due to their
inertia. Thus the fluid is forced to oscillate around the solid components. The flow energy is absorbed by micro
eddies by which the vibration is damped.
The benefits are a smoother running with increased operating speed and production, longer operating times of the
polymer covers between re-grindings and improved product quality due to the reduction of barring.
{{DEFAULTSORT:Anti-Vibration Compound
Classical mechanics