19
OPERATION - MIG/MAG
Before starng any welding acvity ensure that you have suitable eye protecon and
protecve clothing. Also take the necessary steps to protect any persons within the welding
area.
MIG/MAG welding mode
MIG - Metal Inert Gas Welding, MAG - Metal Acve Gas Welding, GMAW - Gas Metal Arc Welding
MIG welding was developed to help meet producon demands of the
war and post war economy which is an arc welding process in which a
connuous solid wire electrode is fed through a MIG welding gun and
into the weld pool, joining the two base materials together.
A shielding gas is also sent through the MIG welding gun and
protects the weld pool from contaminaon which also enhances the
arc.
Connect the MIG torch leads as detailed on
page 17. Work return lead to ‘-’ (B) and the
torch trailing lead to ‘+’ (A)
Ensure that a suitable inert gas supply is
connected.
Switch the power switch on the back panel
to “ON” the machine is started with the
power LED on and the fans are running.
Using the welding mode switch, select MIG
by switching to the MIG posion.
Open the gas valve of the cylinder and adjust the gas regulator to obtain the desired ow rate.
Adjust the “voltage control knob in MIG” and “wire feed speed control knob in MIG” on the front panel
of the machine to get the correct welding voltage and welding current.
Operate the torch trigger and welding can be carried out.
The below MIG wire guide can vary depending on material used, work piece thickness, welding posion
and joint form.
MIG - Gasless
The operaon method is the same as the above MIG operaon except there are no gas opons and the
output polarity is reversed (see page 17).
Wire Diameter DIP Transfer Spray Transfer
(mm)
Current (A) Voltage (V) Current (A) Voltage (V)
0.6 30 ~ 80 15 ~ 18 n/a n/a
0.8 45 ~ 180 16 ~ 21 150 ~ 250 25 ~ 33
1.0 70 ~ 180 17 ~ 22 230 ~ 300 26 ~ 35
1.2 60 ~ 200 17 ~ 22 250 ~ 400 27 ~ 35
1.6 100 ~ 280 18 ~ 22 250 ~ 500 30 ~ 40
A
B
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