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  2. Spot welding - Wikipedia

    en.wikipedia.org/wiki/Spot_welding

    Typically the sheets are in the 0.5 to 3 mm (0.020 to 0.118 in) thickness range. Forcing a large current through the spot will melt the metal and form the weld. The attractive feature of spot welding is that a large amount of energy can be delivered to the spot in a very short time (approximately 10–100 milliseconds). [2]

  3. Friction stir spot welding - Wikipedia

    en.wikipedia.org/wiki/Friction_stir_spot_welding

    In friction stir spot welding, individual spot welds are created by pressing a rotating tool with high force onto the top surface of two sheets that overlap each other in the lap joint. The frictional heat and the high pressure plastify the workpiece material, so that the tip of the pin plunges into the joint area between the two sheets and ...

  4. Symbols and conventions used in welding documentation

    en.wikipedia.org/wiki/Symbols_and_conventions...

    The symbolic representation of a V weld of chamfered plates in a technical drawing. The symbols and conventions used in welding documentation are specified in national and international standards such as ISO 2553 Welded, brazed and soldered joints -- Symbolic representation on drawings and ISO 4063 Welding and allied processes -- Nomenclature of processes and reference numbers.

  5. Electric resistance welding - Wikipedia

    en.wikipedia.org/wiki/Electric_resistance_welding

    A specialized process, called shot welding, can be used to spot weld stainless steel. There are three basic types of resistance welding bonds: solid state, fusion, and reflow braze. In a solid state bond , also called a thermo-compression bond, dissimilar materials with dissimilar grain structure, e.g. molybdenum to tungsten, are joined using a ...

  6. List of welding processes - Wikipedia

    en.wikipedia.org/wiki/List_of_welding_processes

    Nonconsumable electrode, slow, high quality welds Aerospace, Construction (piping), Tool and Die Plasma Arc Welding: 15: PAW Nonconsumable electrode, constricted arc Tubing, instrumentation Shielded Metal Arc Welding [5] 111: SMAW Consumable electrode covered in flux, can weld any metal as long as they have the right electrode

  7. Weld purging - Wikipedia

    en.wikipedia.org/wiki/Weld_purging

    Most weld purging is carried out on joints made by the TIG or GTAW arc welding process. [6] When the laser welding process is chosen, joints or welds being made on reactive materials will need to be carried out and in the case of electron beam welding, this is carried out in a vacuum, in which case purging takes place by complete evacuation of all gas.

  8. Slag (welding) - Wikipedia

    en.wikipedia.org/wiki/Slag_(welding)

    Removal of the slag is necessary for four reasons: ability to inspect the quality of the weld area; aesthetics, or visual appearance; if a second layer or pass of welding is to be made on top of the first; to clean and clear the surface for coatings such as paint or oil. Removal is usually done using manual or power tools.

  9. List of welding codes - Wikipedia

    en.wikipedia.org/wiki/List_of_welding_codes

    Welding. Basic weld joint details in steel. Non-internal pressurized components. EN 1708-3: Welding. Basic weld joint details in steel. Clad, buttered and lined pressurized components. EN 1993-1-8: Eurocode 3: Design of steel structures – Part 1-8: General – Design of joints EN 13133: Brazing - Brazer approval EN 22553