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2. Arc welding - Wikipedia

   en.wikipedia.org/wiki/Arc_welding

   It is a type of welding that uses a welding power supply to create an electric arc between a metal stick ("electrode") and the base material to melt the metals at the point of contact. Arc welding power supplies can deliver either direct (DC) or alternating (AC) current to the work, while consumable or non-consumable electrodes are used.

3. Welding power supply - Wikipedia

   en.wikipedia.org/wiki/Welding_power_supply

   A transformer-style welding power supply converts the moderate voltage and moderate current electricity from the utility mains (typically 230 or 115 VAC) into a high current and low voltage supply, typically between 17 and 45 (open-circuit) volts and 55 to 590 amperes. A rectifier converts the AC into DC on more expensive machines.

4. Shielded metal arc welding - Wikipedia

   en.wikipedia.org/wiki/Shielded_metal_arc_welding

   Shielded metal arc welding (SMAW), also known as manual metal arc welding (MMA or MMAW), flux shielded arc welding [1] or informally as stick welding, is a manual arc welding process that uses a consumable electrode covered with a flux to lay the weld.

5. Submerged arc welding - Wikipedia

   en.wikipedia.org/wiki/Submerged_arc_welding

   SAW strip-cladding utilizes a flat strip electrode (e.g. 60 mm wide x 0.5 mm thick). DC or AC power can be used, and combinations of DC and AC are common on multiple electrode systems. Constant voltage welding power supplies are most commonly used; however, constant current systems in combination with a voltage sensing wire-feeder are available.

6. Welding - Wikipedia

   en.wikipedia.org/wiki/Welding

   Overhead stick welding. Welding is a fabrication process that joins materials, ... (DC) or alternating current (AC), and consumable or non-consumable electrodes.

7. Arc blow - Wikipedia

   en.wikipedia.org/wiki/Arc_blow

   Arc blow tends to occur if the material being welded has residual magnetism at a certain level, particularly when the weld root is being made, and the welding current is direct current (DC positive or negative). Magnetic arc blow is popularly attributed to a change in the direction of current as it flows into and through the workpiece.