Lincoln Electric Magnum 450WC User manual

MAGNUM®450WC
K684
The Magnum 450WC is a water
cooled gun and cable assembly
designed for both gas-shielded solid
(GMAW) and gas-shielded, flux-cored
(FCAW-GS) continuous feed arc
welding wires.
To function properly, the 450WC must
be connected to a water cooler. Water
flows through the gun cables and han-
dle to the end of the gun tube, cooling
the gas diffuser and nozzle.
In addition to keeping the contact tip
cool, the outgoing end of the gun tube
is specially designed for maximum
heat transfer between the cooling
water and the gas nozzle. The gas
nozzle will not overheat, even when
operating the gun at 100% duty cycle.
This results in cool operation in appli-
cations such as spray transfer, pulse
welding and when using argon
blended gas.
The gun has two ratings when
cooled at a minimum water flow
rate of .58 gallons (2.2 liters) per
minute.
With straight CO2gas:
450 amps, 100% duty cycle.
With argon/CO2blended gas:
400 amps, 100% duty cycle.
The wire diameter range is
.035 - 5/64” (0.9 - 2.0mm):
Solid Wire:
.035 - 1/16” (0.9 - 1.6mm)
Flux-cored Wire:
.045 - 5/64” (1.2 - 2.0mm)
Choose from 10 ft. or 15ft. (3 or 4.5m)
cable lengths.
The gun tube angle is 60 degrees.
Cable liners for aluminum wire feeding
are available. See Expendable
Replacement Parts table on page 3.
The 450WC gun can be connected to
a wire feeder with a Lincoln Fast-Mate™
adapter or a European-style gun
adapter. The following connector kits
allow connection of the 450WC gun
to wire feeders without Fast-Mate
receptacles:
The Magnum 450WC Water-Cooled Gun and
Cable Assembly

Product No. Cable Length Wire Size Contact Tip Gas Diffuser Gas Nozzle Cable Liner
ft. (mm.) In. (mm.)
K684-X 10 (3.5) .035 (.9) S22334-035 S22030-1 M18210-4 M16083-1
.045 (1.2) S22334-045
K684-X 15 (4.5) .035 (.9) S22334-035 S22030-1 M18210-4 M16083-1
.045 (1.2) S22334-045
K684-X 10 (3.5) .052 (1.3) S22334-052 S22030-1 M18210-4 M16083-2
1/16 (1.6) S22334-116
K684-4 15 (4.5) .052 (1.3) S22334-052 S22030-1 M18210-4 M16083-2
1/16 (1.6) S22334-116
K684-5 10 (3.5) 1/16 (1.6) S22334-116 S22030-1 M18210-4 M16083-3
5/64 (2.0) S22334-564
K684-6 15 (4.5) 1/16 (1.6) S22334-116 S22030-1 M18210-4 M16083-3
5/64 (1.6) S22334-564
Connector Feeder
Kit Type
K489-1 Lincoln LN-7 Series, LN-8
or LN-9
K489-2* Lincoln LN-25 or DH-10
K489-3 Miller wire feeders
K489-4 Tweco adapted wire
feeders
K489-5 Hobart Series 2000 wire
feeders
K489-6 ESAB wire feeders
K489-7 Lincoln 10-Series feeders,
LN-10, DH-10, PF-10,
STT-10.
* To install a K489-2 Adapter Kit on a 10-Series wire feeder, a K1500-1
wire feeder connector is also required.
ORDERING INFORMATION
Customer Assistance Policy
The business of The Lincoln Electric Company is manufacturing and selling high quality welding equipment, consumables, and cutting equipment. Our challenge is to meet the needs
of our customers and to exceed their expectations. On occasion, purchasers may ask Lincoln Electric for advice or information about their use of our products. We respond to our
customers based on the best information in our possession at that time. Lincoln Electric is not in a position to warrant or guarantee such advice, and assumes no liability, with respect
to such information or advice. We expressly disclaim any warranty of any kind, including any warranty of fitness for any customer’s particular purpose, with respect to such information
or advice. As a matter of practical consideration, we also cannot assume any responsibility for updating or correcting any such information or advice once it has been given, nor does
the provision of information or advice create, expand or alter any warranty with respect to the sale of our products.
Lincoln Electric is a responsive manufacturer, but the selection and use of specific products sold by Lincoln Electric is solely within the control of, and remains the sole responsibility of
the customer. Many variables beyond the control of Lincoln Electric affect the results obtained in applying these types of fabrication methods and service requirements.

Description Part No. Size Inches Size mm.
CABLE LINER for 15' (4.5m) M16083-1 .035-.045 .9-1.2
and less (Steel wire) M16083-2 .052-1/16 1.3-1.6
M16083-3 1/16-5/64 1.6-2.0
CABLE LINER for 15' (4.5m) M18732-2 (black) .030-.035 .8-.9
and less (Aluminum wire) M18732-4 (red) 1/16 1.6
M18732-6 (blue) .035-3/64 .9-.2
CABLE LINER for 10' (3.0m) M18732-1 (black) .030-.035 .8-.9
and less (Aluminum wire) M18732-3 (red) 1/16 1.6
M18732--5 (blue) .035-3/64 .9-1.2
CONTACT TIPS(1) S22334-035 .035 .9
S22334-035A .035A .9A
S22334-040 .040 1.0
S22334-040A .040A 1.0A
S22334-045 .045 1.2
S22334-364A 3/64A 1.2A
S22334-052 .052 1.3
S22334-116 1/16 1.6
S22334-116A 1/16A 1/16A
S22334-564 5/64 2.0
GAS DIFFUSER S22030-1
NOZZLE INSULATOR S22031-1
GAS NOZZLE (flush) M18210-1 .39 ID 10 ID
(flush) M18210-2 .51 ID 13 ID
(flush) M18210-3 .59 ID 15 ID
.12" (3mm) recess M18210-4 .59 ID 15 ID
.12" (3mm) recess M18210-5 .76 ID 19.2 ID
Spot M18210-6 .76 ID 19.2 ID
GUN TUBE ASSEMBLY REPLACEABLE PARTS:
GUN TUBE INSULATION S22333-7A
NOZZLE HOLDER(2) S22333-7B
FIXING NUT S22333-7C
CERAMIC INSULATOR(2) S22333-7D
INSULATION CONE S22333-7F
JOINT COMPOUND T12837
EXPENDABLE REPLACEMENT PARTS
(1) Add suffix “D” for 10-pack, “M” for 20-pack.
(2) Joint compound is required for assembly of these parts.

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