4.3. CUTTING PROCESS INITIATION
Bring the torch to the initial cutting position
and start locally heating the workpiece to the
ignition temperature, approximately bright red
/ yellow colour. Then open the cutting oxygen
valve and switch on the feed in the same
moment.
4.4. THE CORRECT CUTTING
SPEED
can be seen from the slag production, from
the almost vertical spray of sparks and from
the cutting noise. The approximate values of
the cutting speed can be taken from relevant
cutting nozzle table as above.
4.5. STRIPS CUTTING WITH
GUIDING RAIL
4.5.1. Place the rail on the part to be cut. If
there is a need for a length more than 1,8m
then connect the second rail with the first as
shown on Figure 5.
4.5.2. Place GCE proFIT
sure that front and rear wheels fit in the rail
furrows. Rear wheel should be fixed to avoid
side movement.
4.5.3. Adjust the cutting speed in relation to
particular nozzle and material thickness. Adjust also movement direction. Turn clutch lever to
the direction of arrow to stand-by position.
4.5.4. Set the cutting torch on the metal sheet at the place of cut start. Ignite and set pre-
heating flame as required according to instruction above. Preheat the material on the ignition
temperature.
4.5.5. Fully open cutting oxygen valve in the same time and start moving machine by switching
of movement control knob in requested direction as shown on the Figure 3.
4.5.6. After the cutting is over, stop the machine by bringing the movement control switch in
central position, shut all the gases of. Gas valves shall be closed in following sequence: 1.
cutting oxygen, 2. fuel gas, 3. heating oxygen.
4.6. MANUALLY GUIDED CUTTING
GCE proFIT® SLM can be guided manually by the operator for free pattern cut over the outer
line of the pattern to be cut. Castor wheel is to be adjusted free for all directions and all of the
three wheels should be in contact with the panel. See also Figure 6.
4.7. PREPARING OF THE METAL SHEET EDGES BEFORE WELDING
– level cutting with one torch (without weld root face creation).
Prepare GCE proFIT
®
wheel and turn the torch with the torch holder to get requested angle. Then tighten properly
again Cutting angle hand-wheel. Proceed according to point 4.5. afterwards
SLM on the rail. Make
®
SLM according to point 4.5. above. Lose a bit the Cutting angle hand-
9/136
Straight
edge
Fig.5: Zn coated track extension
Fig.6: Manually guided cutting
EN