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GUIDE TO MMA WELDING
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.
MMA arc striking
Tap Technique - Li the electrode upright and bring it down to strike the work piece. Aer forming a
short circuit, quickly li up about 2~4mm and arc will be ignited. This method is dicult to master.
Scratch technique - Drag the electrode and scratch the work piece as if striking a match. Scratching the
electrode may cause the arc to burn along the scratch path, so care should be taken to scratch in the weld
zone. When the arc is struck adopt the correct welding posion.
Electrode posioning
Horizontal or at posion
The electrode should be posioned at right angles to the plate and inclined in the direcon of travel at
around 10º-30º.
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