Vilter VSM 71-701, Руководство по эксплуатации и обслуживанию

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20
FAST HEAT, INC.
CARTRIDGE
HEATERS
APPLICATION FOR SELECTION OF
CARTRIDGE HEATERS IN PLATENS
Whether round or square cartridges are
used, close contact of the heater to the
component being heated is important.
When the application is such that the hole
into which a round heater is to be inserted is
too long for practical drilling and reaming, a
Square Cartridge can be selected.
By considering a split plate design, platen
recesses for the Square heater can be milled
for greater lengths or to keep the machine
in-house.
For even heating along the length of the
heaters, consider distributed wattage.
If terminations are protected by a wire
enclosure box and the platen is operating in
excess of 450º F (232º C), consider specifying
high temperature mica tape leads.
To leads that are flexing, add clip supports;
where there is abrasion, cover the leads with
stainless steel braid. For possible contamina-
tion, request armor.
PRECISION STANDARD SQUARE
CARTRIDGE HEATERS
Our Square Cartridge heaters,
3
/
8
” (9.5 mm),
1 /
2
” (12.7 mm), and 5 /
8
” (15.9 mm) square,
provide more surface area contact than
cylindrical types. Square Cartridge heaters
are normally inserted in a milled slot, there-
fore permitting greater lengths than would
be practically feasible with a drilled or
reamed hole.
As with our Standard Cartridge, Fast Heat’s
Square Cartridge heater features a stainless
steel sheath for resistance to oxidation and
can withstand internal temperatures of up
to 1000º F (538º C). In order to optimize heat
transfer and lengthen the life of the heater,
high-purity magnesium oxide (MgO) insula-
tion fills any space around the resistor wire.
APPLICATIONS
Square Cartridge heaters can be used in
virtually any application involving average
temperatures and vibration. Some examples
include sealing bars, heating platens,
heating fluids and forming.
Square Cartridges can also be modified to
meet the demands of virtually any special
application. Our engineers can utilize a vari-
ety of alternative features and options to
customize the heater to your specific needs.