MMA (Manual Metal Arc) Welding

An arc-welding process wherein coalescence is produced by heating with an arc between a covered metal (stick) electrode and the work. Shielding is obtained from decomposition of the electrode covering. Pressure is not used and filler metal is obtained from the electrode.

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The Manual Metal Arc Process (MMA Welding) – TWI
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Manual metal arc welding (MMA) – OpenLearn – Open University
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