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2. Shielded metal arc welding - Wikipedia

   en.wikipedia.org/wiki/Shielded_metal_arc_welding

   The actual welding technique utilized depends on the electrode, the composition of the workpiece, and the position of the joint being welded. The choice of electrode and welding position also determine the welding speed. Flat welds require the least operator skill, and can be done with electrodes that melt quickly but solidify slowly.

3. Welding - Wikipedia

   en.wikipedia.org/wiki/Welding

   For DC welding, the electrode can be connected to the machine's positive terminal (DCEP) or negative terminal (DCEN), changing the current's direction. The process and type of electrode used will typically determine the current. [44] [45] Shielding gas prevents oxygen in the atmosphere from entering the molten weld pool.

4. Filler metal - Wikipedia

   en.wikipedia.org/wiki/Filler_metal

   An electrical discharge from this electrode provides heat that melts both the electrode and heats the base metal. TIG welding is an electric welding process that uses a non-consumed tungsten electrode to provide heat, with the filler rod added manually. This is more like gas welding as a process, but with a different heat source.

5. Welding power supply - Wikipedia

   en.wikipedia.org/wiki/Welding_power_supply

   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).

6. Hyperbaric welding - Wikipedia

   en.wikipedia.org/wiki/Hyperbaric_welding

   Dry hyperbaric welding involves the weld being performed at raised pressure in a chamber filled with a gas mixture sealed around the structure being welded.. Most arc welding processes such as shielded metal arc welding (SMAW), flux-cored arc welding (FCAW), gas tungsten arc welding (GTAW), gas metal arc welding (GMAW), plasma arc welding (PAW) could be operated at hyperbaric pressures, but ...

7. List of EN standards - Wikipedia

   en.wikipedia.org/wiki/List_of_EN_standards

   EN 440: "Welding consumables wire electrodes and deposits for gas shielded metal arc welding of non-alloy and fine grain steel - Classification" (1994) EN 450: Fly ash for concrete - Definitions, requirements and quality control; EN 474: Earth-moving Machinery. Safety. General Requirements; EN 518: Structural timber. Grading.