Vibration Table Maintenance
1.
Inspect vibrators and hoses every day before running
2.
Check and tighten all vibrators once per week Medium 25-30 Ft*Lbs Large 120-125
Ft*Lbs
3.
Check and tighten all vibrator hose fittings once per week
4.
Check oil level once per week
5.
Check exhaust mu
ffl
er once per month
6.
Replace exhaust mu
ffl
er or clean fully once per year
7.
Check table outside bolts once per month
Authorization and Copyright of this document is
controlled by Hanse Environmental Inc.
44
December 26, 2012
From time to time, we get complaints from customers regarding galling of stainless steel fasteners.
Here is an excerpt from the Industrial Fastener Institute’s Standards Book:
Thread galling seems to be the most prevalent with fasteners made of stainless steel, aluminum, titanium
and other alloys which self-generate an oxide surface film for corrosion protection.
During fastener
tightening, as pressure builds between the contacting and sliding thread surfaces, protective oxides are
broken, possibly wiped off and interface metal high points shear or lock together.
This cumulative
clogging-
shearing-locking action
causes increasing adhesion.
In the extreme, galling leads to seizing – the actual
freezing together of the threads.
If tightening is continued, the fastener can be twisted off or its threads
ripped out.
During minor galling, the fastener can still be removed, but in severe cases
of galling, a strong bond
between the bolt and nut can prevent removal of fasteners. Unfortunately, little is known on how to control it,
but
here are two
ways to minimize this effect:
Decreasing installation RPM speed will cause less friction and decrease heat generation.
Lubrication used prior to assembly can dramatically reduce or eliminate galling. Recommended lubricants
should contain higher amounts of molybdenum disulfide, such as graphite which is very commonly used as
a solid lubricant or special anti-galling lubricants sold by chemical companies.
We provide anti-seize compound with all of our bolts and
strongly encourage
you to use it to reduce the
aggravation of galling.
Contrary to popular belief, galling of stainless steel is not a symptom of a “cheap”
fastener – it is prevalent in all types of stainless steel, aluminum and titanium fasteners.
You can be assured
that the stainless steel fasteners we provide with our products
are manufactured of
high quality.
Save yourself a lot of grief and always use a thread lubricant when working with stainless steel
fasteners.
Sincerely,
Peter Hanse
Vice President
Содержание VTC Series
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