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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.
A welding power supply is a device that provides or modulates an electric current to perform arc welding. [1] There are multiple arc welding processes ranging from Shielded Metal Arc Welding (SMAW) to inert shielding gas like Gas metal arc welding (GMAW) or Gas tungsten arc welding (GTAW).
Welding is a fabrication ... but this is under review by the American Welding ... Pipes Joint Welding Archived 2023-06-23 at the Wayback Machine; Welding Process;
Arc welding power supplies can deliver either direct (DC) or alternating (AC) current to the work, while consumable or non-consumable electrodes are used. The welding area is usually protected by some type of shielding gas (e.g. an inert gas), vapor, or slag. Arc welding processes may be manual, semi-automatic, or fully automated.
During welding, a number of forces will act on the tool: [30] A downwards force is necessary to maintain the position of the tool at or below the material surface. Some friction-stir welding machines operate under load control, but in many cases the vertical position of the tool is preset, and so the load will vary during welding.
The first machine was built from recycled scrap steel and coil windings in his basement. [3] In 1935, Miller Electric Mfg. Co. was incorporated. Al Mulder, Miller's sole engineer, invented the world's first high frequency-stabilized AC industrial welder, making AC welding practical for use in factories and construction. [citation needed]
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