Systematics PATRIOT PBE180, Руководство пользователя

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Systematics, Inc. West Chester, PA. 19380 9
WELDING
Optimum control settings will
vary according to the thickness of
the metal, the type of joint,
operator preference, etc. Best
results can be obtained through
experience with the welding machine
or by making trial welds. Select
some sample material of the same
type and thickness as the material
to be welded. Set the welding
controls for optimum results using
the sample material thickness and
wire size being used as a starting
point, weld until experience is
gained using the unit.Refer to the
chart inside the access door for the
approximate welder settings.
CONTINUOUS WELDING ON
STEEL
1. Trim the electrode wire to leave
approximately 1/4 inch stickout
beyond the end of the contact tip
and install the welding nozzle.
The contact tip should be flush
or stick out up to 1/16 inch
beyond the end of the nozzle.
NOZZLE
CONTACT TIP
(FLUSH TO
1/16" STICKOUT)
ELECTRODE WIRE
(1/4" STICKOUT)
NOTE
When welding steel, the ideal
position for holding the torch
is inclined approximately 30
degrees towards the direction
of travel. This allows the arc
to be seen easily, resulting
in greater control of the weld
pool. Most right-handed wel-
dors move from left to right.
This method, known as forehand
welding, provides a gas shield
for the cooling weld puddle
and helps in obtaining an
oxidation free weld deposit.
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.
FIG. 12. NOZZLE ADJUSTMENT
FOR WELDING STEEL
FIG. 13. TORCH POSITION
FOR WELDING STEEL
- RIGHTHANDED WELDOR
WORK
SHIELDING
GAS
30 DEGREES
DIRECTION
OF TRAVEL
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.