กก
The noise reduction effect of
the sound insulation cover is usually selected from the noise
level of a certain
point without the sound insulation cover and the noise level of
the sound insulation cover.
The sound insulation cover is composed of a sound insulation
wall and a sound absorption layer. The sound
insulation cover of mechanical and electrical equipment needs
high mechanical strength and can withstand the
impact. Therefore usually used in steel manufacturing, if not
device and sound absorption materials cover. The
uniform absorption coefficient is very small, the cover of the
sound insulation effect of failure, sometimes even
enlarge the effect, but to make noise about progress. It is
necessary to note that in the cover of efficient
equipment and sound absorption materials. Glass wool is a kind
of contrast for sound isolation cover the data. A
wide range of mechanical and electrical equipment, such as
electrical equipment, which has strong noise, is a
compact fan, diesel engine and ball mill.
Mill, high speed punch press, and so on, often use the method of
sound insulation cover to drop noise.
.
.
.