4
Constant-voltage power supplies
should not be used with exothermic
cutting equipment. When the
exothermic cutting rod contacts the
workpiece, the power supply is being
dead shorted, causing maximum
amperage output of the power supply.
This surge can exceed the rated
output of the machine and the
recommended amperage for powered
exothermic cutting.
Oxygen Supply
This cutting process uses standard
industrial-grade oxygen to support the
exothermic reaction and to remove
molten metal. All SLICE equipment
uses standard oxygen fittings. SLICE
torches are equipped with 10 feet of
1/4" I.D. oxygen hose. The usual
operating pressure is 80 psi.
Applications such as cutting material
sections 3" and thicker might require
higher operating pressures.
Pressures as low as 40 psi have
been used to do jobs such as
washing off rivet heads and scarfing
out small cracks for repair.
The oxygen consumption rate for
SLICE cutting rods at 80 psi is 7 to
7.5 cfm for the 1/4" diameter cutting
rods and 12 to 13 cfm for the 3/8"
diameter cutting rods. This rate will
vary if a different operating pressure
is used.
Compressed air should not be used
for exothermic cutting. Compressed
air does not contain enough oxygen
to support the burn. Impurities in
compressed air can damage or
destroy the torch and components.
Compressed air could cause serious
injury to the operator. The torch
could burn from the inside or even
explode from the buildup of dirt from
the compressed air in the oxygen-
supply tube.
Cutting Rods
SLICE Cutting Rods are made of
carbon steel. They are made by
rolling a steel strip into a rod.
There are coated and uncoated
cutting rods. The coating is made of
arc stabilizers and a binder. There
are several advantages to using the
coated rods with power. Advantages
are (1) more efficient cutting rates
(more cut per inch of rod burnt and
more cut per minute of burn time); (2)
easier rod operation; and (3)
protection from burning out on the
side of the rod especially when
piercing.
These SLICE cutting rods are
available:
1/4" x 22" (6.4 mm X 558.8 mm)
Standard size cutting rods used in a
variety of jobs. This rod is
recommended for all straight-line
cutting and most general-cutting
applications. It is available coated or
uncoated.
1/4" x 44" (6.4 mm X 1117.6 mm)
This rod is used when greater length
is needed to reach the cutting area or
when piercing holes in materials
thicker than 18". 1/4" x 44" rods are
available uncoated.
3/8" x 18" (9.5 mm X 457.2 mm)
These rods are used for heavy
piercing with a large bore. The 3/8" x
18" cutting rod comes coated or
uncoated.
3/8" x 36" (9.5 mm X 914.4 mm) This
rod is used when added length is
needed to complete cutting. 3/8" x
36" cutting rods come uncoated only.
All SLICE cutting torches come ready
to use the 1/4" diameter rods. Use of
the 3/8" diameter rods requires the
3/8" adapter kit.
Содержание SLICE
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