Lincoln Electric IM408 MAGNUM SG SPOOL GUN - Manual (Page 8)

1
PART A
RECOMMENDED PROCESSES AND
EQUIPMENT
The spool gun can be used to weld aluminum and alu-
minum alloys using Gas Metal Arc Welding or GMAW
(also known as MIG) process, which requires a supply of
shielding gas. Argon is normally used due to its smooth,
stable arc, good metal transfer, and low cost. Positive
polarity gives good penetration and affords a base metal
cathode cleaning effect.
The spool gun should be used with a constant voltage (CV)
type power source, and requires control of wire feed, gas
solenoid valve, and welding power, either external or inter-
nal to the power source (see Connection to K488 ... and
Installation to Similar Welders... for specific require-
ments).
PRODUCT DESCRIPTION
The K487 Magnum™ SG spool gun is a lightweight, hand-
held combined semiautomatic wire feeder and welding
gun, designed primarily for aluminum welding using argon
shielding gas. The feeding distance of the self-contained
wire supply to the arc is only several inches, eliminating
the wire feeding problems normally associated with feed-
ing soft aluminum electrode through a conventional gun
and cable assembly. The cable included with the Magnum
SG allows welding up to 25 feet (7.6 m) from the power
source.
The gun is intended for use with a wide variety of constant
voltage (CV) power sources through the use of the K488
Magnum SG Control Module (see Connection to K488 ...
for CV source requirements). It may also be adapted to the
Lincoln Idealarc
® SP-150, SP-200 and SP-250 single phase
wire feeder power sources or similar welders (see
Installation to Similar Welders... for requirements).
The Magnum SG is ideal for aluminum fabrication in
industrial shops, automobile body shops, marinas and for
the advanced hobbyist.
SPECIFICATIONS
(1) Duty Cycle based on 10 minute time period.
Magnum SG Spool Gun with
Model Remote Wire Speed Control
Type K487
Gun Weight (empty) 2.75 pounds (1.25 kg)
Cable Length 25 feet (7.6 m)
Spool Weight, aluminum wire 1 pound (.45 kg)
Spool Size 4 inch (102 mm) diameter
Reversible Wire Drive Roll Narrow groove for .023 to .035"
(.6-.9 mm) dia. aluminum wire
Wide groove for 3/64"
(1.2 mm) dia. aluminum wire
Wire Speed 50 to 650 ipm (1.3-16.5 m/min)
Current Rating 250 Amps
Welding Current @ 60%
Duty Cycle (1)