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Design
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Noise dampening
Noise
Reduction
Vibration
generates noise. Vortices trailing high-speed impeller blades, impacting
gear teeth, bearings spinning in races, slapping piston skirts,
plungers sliding against the walls of actuators, reciprocating detents
and other sources of vibration are dampened when treated with Xylan.
Under impact, noise generation is reduced.
In most cases, noise generation
is effectively reduced by coatings of 25 to 40 microns/0.001 to
0.0015 in. When corrosion is not a consideration, these films may
be applied in one coat, although thicker coats may have greater
energy-absorbing capacity.
If excessive noise is the primary
problem, multiple coats of Xylan (up to 60 microns/ 0.0025 in.)
may be applied to achieve optimum results. Caution should be taken
to avoid excessive thickness, since the coating could be subject
to delamination or tearing.
The best choice of Xylan formulation
for noise reduction depends on the problem. If corrosion is not
a problem apply a soft coating such as Xylan 1006, otherwise use
P-92 primer and a topcoat of Xylan 1014.
A manufacturer of domestic dryers
used a bearing coated with Xylan 1010 to replace an oil-impregnated
bearing. The problem with the old bearing was that, after about
one year of service, the oil migrated out of the bearing and the
dryer developed an annoying squeak. The coating not only provided
the required lubrication, but also eliminated the squeak.
Note:
Definitions of any technical terms used on this page
can be found in our
glossary.
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