Tweco SLICE - Manual (Page 13)

13
Metal Fabrication
Pierce starter holes in thick plates.
Rough-cut pieces of material from
large plates. Field construction.
Demolition
Cut through rebar. Pierce concrete.
Remove rivets and frozen bolts. Cut
steel imbedded in concrete.
Equipment maintenance/repair. Cut
corroded material.
Power Plants
General maintenance. Removal of
piping. Cut out scrap feeder pans.
Remove old grating covered with
refractory. Remove old boilers.
Remove or repair storage tanks.
Farming
General maintenance.
Equipment/machinery repair. Repair
stainless steel fertilizer tanks. Cut
metal encrusted with rust and/or mud.
Scrap/Salvage Yards
Cut all types of scrap metal, including
cast iron, stainless steel, and
aluminum. Cut up scrap cars in
remote areas of yard. Equipment
maintenance. Cut badly corroded or
crusted material.
TROUBLE SHOOTING
The SLICE Exothermic Cutting
process is not complicated to use or
maintain, but sometimes problems do
arise. Some common problems and
their solutions are listed below:
Problem:
Rod burns but with no cut
progression.
Solution:
(1) To much gap between the
burning rod tip and the workpiece.
Must maintain slight pressure against
workpiece.
(2) Travel speed too slow.
(3) Oxygen pressure too low.
Problem:
Molten material not being blown out
of cut area.
Solution:
(1) Insufficient oxygen pressure being
used.
(2) Rubber washer behind collet
chuck worn and needs to be
replaced.
(3) Travel speed too fast.
Problem:
Battery will only start a few rods
before charge is depleted.
Solution:
(1) Battery was not given sufficient
time to recharge.
(2) Three-position switch on battery
box not put in the "CHARGE"
position.
(3) Battery needs to be replaced.
(4) Battery left exposed to
subfreezing temperatures.
Problem:
Torch shield is being burnt off around
collet nut.
Solution:
(1) Rod is not properly seated in
torch. Refer to section on operating
techniques to properly seat rod.
(2) Collet extension not used when
piercing holes.
Problem:
When piercing anything but copper
and its alloys, the rod consumes
extremely fast.
Solution:
(1) Operator is piercing with power.
All piercing operations except ones
on copper and its alloys should be
done without power.
Problem:
Arced collet chuck and/or rod is
burned off just outside of collet chuck.
Solution:
(1) Using a CP type welding power
source.