AWELCO UNIMIG series Handbuch Seite 10

SEMI-AUTOMATIC BRAZING FOR HIGH-TENSILE STRENGTH STEELS (MIG MODE)
The UNIMIG 160-2 and 200-2 are recommended by car manufacturers to braze-weld high-tensile strength plates with a
cuprosilicium CusI3 wire or cuproaluminium CuAl8 wire (Ø 0.8 mm and Ø 1 mm). The welder must use a neutral gas: pure
argon (Ar). For specific gas requirements, seek advice from your gas distributor. The gas flow required is between 15 and 25
L / min.
REEL AND TORCH ASSEMBLY
• Open the door of the machine.
• Place the reel on the drive pin
• Adjust the reel brake
tighten too much - the reel must rotate without straining the motor.
• The wire rollers are double-grooved
the roller when fitted is the diameter currently in use. For Ø 0.8 wire, use the Ø 0.8 groove.
• Before use:
- Release the fixing screw of the wire guide
- Place the rollers
- Then place the wire guide
screw.
• To set the adjustment knob of the drive rollers , proceed as follows: loosen the knob fully, start the motor by
pressing the torch trigger, tighten the adjustment knob whilst pressing the trigger. Bend the wire where it comes out
of the nozzle and hold it in place to stop its progress. The setting is correct when the guide roller slides over the wire
even when it is blocked at the end of the torch. A common adjustment is the rollers command
steel and 2 for aluminum.
GAS COUPLING
Screw the regulator/flowmeter onto the gas bottle
To avoid gas leaks, use the collars provided in the accessories box.
SETTINGS PANEL:
Welding mode selection
NORMAL (2T): standard two-stage welding
NORMAL (4T): standard four-stage welding
DELAY: intermittent welding modes for
optimised operating procedure.
SPOT : Spot welding with adjustable spot
diameter
Wire speed selector
Wire speed regulator.
The speed varies from 1 to 15 m/minute.
SPOT potentiometer
« SYNERGIC » MODE:
Example for the UNIMIG 160-2:
of the reel support
to avoid reel movement tangling the wire when the welding stops. Be careful not to
(Ø 0.6/ Ø 0.8, Ø 0.8/ Ø 1, Ø 1/ Ø 1.2). The visible diameter indicated on
as close as possible to the roller but without touching it, then tighten the fixing
⑪
⑫
①
Manual Mode
In manual mode, the wire speed is determinated by
the user by adjusting the potentiometer
Synergic Mode
Position the potentiometer
« OPTIMAL SYNERGIC » zone
In this mode, the device determines the optimum
wire speed according to 3 parameters:
Voltage
Wire diameter
The power mode
The wire speed is adjustable + / -.
on the scale 3 for
⑬
⑪
⑭
⑪
in the middle of the
.
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