10
Snap-on Tools Corporation Kenosha, WI 53141-1410
CONTINUOUS WELDING ON STEEL
(Cont.)
2. Spray the inside of the nozzle
and the outside of the contact
tip with anti-spatter compound.
3. Locate the torch over the joint
to be welded with the contact tip
approximately 3/4 inch from the
work surface.
NOTE
When welding steel, the ideal
position for holding the
torch is inclined approxi-
mately 30 degrees towards
the direction of travel. The
arc can to be seen easily,
which results in greater
control of the weld pool.
Most right-handed weldors
move from left to right.
This method, known as fore-
hand welding, provides a gas
shield for the cooling weld
puddle and helps in obtain-
ing an oxidation free weld
deposit.
CONTINUOUS WELDING ON ALUMINUM
(Nylon liner and 100% Argon shielding
gas are
)
required
USE
1. Trim the electrode wire, leaving
approximately 1 inch stickout.
Bend the wire over as shown, to
allow for a scratch start. The
contact tip should be recessed
inside the nozzle approximately
3/8 inch. This helps prevent the
welding wire from burning back
to the contact tip.
4. Use a welding helmet with a shade
9 to 11 filter lens, depending on
operator preference.
5. Squeeze the torch trigger. The
wire will feed and an arc will be
established. As the weld is
deposited, move the torch slowly
along the weld seam at a constant
speed, while maintaining a con-
stant arc length and a constant
tip-to-work distance.
FIGURE 13.
TORCH POSITION FOR WELDING STEEL
- RIGHTHANDED WELDOR
30 DEGREES
DIRECTION
OF TRAVEL
SHIELDING
GAS
WORK
NOZZLE
ELECTRODE WIRE
(1" STICKOUT)
CONTACT TIP
(RECESSED 3/8")
4. Follow steps 4 and 5 as in
"Continuous Welding on Steel".
2. DO NOT spray any anti-spatter
material on the torch or base
metal and DO NOT attempt to
lubricate the aluminum wire in
any way. Weld contamination will
occur unless the wire, base
metal, torch and work area are
kept clean.
3. Bring the torch nozzle to 1/2 to
5/8 inch from the workpiece. The
recommended position of the torch
and direction of travel are
shown in Figure 15.
FIGURE 14. NOZZLE ADJUSTMENT
FOR WELDING ALUMINUM
FIGURE 15.
TORCH POSITION FOR WELDING ALUMINUM
WORK
10 DEGREES
DIRECTION
OF TRAVEL
SHIELDING
GAS
