Jasic TIG Series - OPERATION - MMA; MMA Welding Mode Overview; MMA Operation Steps

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OPERATION - MMA
Before starng any welding acvity ensure that you have suitable eye protecon and
protecve clothing. Also take the necessary steps to protect any persons within the welding
area.
MMA welding mode
MMA (Manual Metal Arc), SMAW (Shielded Metal Arc Welding) or just Sck Welding.
Sck welding is an arc welding process which melts
and joins metals by heang them with an arc
between a covered metal electrode and the work.
Shielding is obtained from the electrode outer
coang, oen called ux. Filler metal is primarily
obtained from the electrode core.
The electrodes outer coang called ux assists in
creang the arc and provides a shielding gas on
cooling forms a slag covering to protect the weld
from contaminaon.
When the electrode is moved along the work piece
at the correct speed the metal core deposits a
uniformed layer called the weld bead.
MMA operaon steps
Aer connecng the welding leads as detailed you will need to
switch the power switch on the back panel of the machine to “ON”.
Select MMA mode by pressing the welding mode selecng key unl
the MMA LED illuminates and MMA can be carried out.
There is now welding voltage output at both output terminals.
Please Note:
THE VRD indicator is now ON to inform you that the output voltage is set to <12V DC.
The digital display meter will now be showing a pre-set welding current and rotang the control dial will
increase or decrease the value.
The TIG300P also features hot start and arc force to ensure that you obtain the best MMA welding
results according to your welding applicaon, please see the following page which describes these
welding parameters.