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  2. List of welding processes - Wikipedia

    en.wikipedia.org/wiki/List_of_welding_processes

    Two pointed electrodes apply pressure and current to two or more thin workpieces. Automobile industry, Aerospace industry. Resistance seam welding [6] 22. RSEW. Two wheel-shaped electrodes roll along workpieces, applying pressure and current. Aerospace industry, steel drums, tubing. Projection welding. 23.

  3. Welding - Wikipedia

    en.wikipedia.org/wiki/Welding

    For the play, see Welded (play). Overhead stick welding. Welding is a fabrication process that joins materials, usually metals or thermoplastics, primarily by using high temperature to melt the parts together and allow them to cool, causing fusion. Common alternative methods include solvent welding (of thermoplastics) using chemicals to melt ...

  4. Welder - Wikipedia

    en.wikipedia.org/wiki/Welder

    Welder. A welder is a person or equipment that fuses materials together. The term welder refers to the operator, the machine is referred to as the welding power supply. The materials to be joined can be metals (such as steel, aluminum, brass, stainless steel etc.) or varieties of plastic or polymer. Welders typically have to have good dexterity ...

  5. Hyperbaric welding - Wikipedia

    en.wikipedia.org/wiki/Hyperbaric_welding

    Hyperbaric welding is the process of extreme welding at elevated pressures, normally underwater. [1][2] Hyperbaric welding can either take place wet in the water itself or dry inside a specially constructed positive pressure enclosure and hence a dry environment. It is predominantly referred to as "hyperbaric welding" when used in a dry ...

  6. Arc welding - Wikipedia

    en.wikipedia.org/wiki/Arc_welding

    Arc welding is a welding process that is used to join metal to metal by using electricity to create enough heat to melt metal, and the melted metals, when cool, result in a binding of the metals. 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 ...

  7. Gas metal arc welding - Wikipedia

    en.wikipedia.org/wiki/Gas_metal_arc_welding

    Gas metal arc welding (GMAW), sometimes referred to by its subtypes metal inert gas (MIG) and metal active gas (MAG) is a welding process in which an electric arc forms between a consumable MIG wire electrode and the workpiece metal (s), which heats the workpiece metal (s), causing them to fuse (melt and join).

  8. Welder certification - Wikipedia

    en.wikipedia.org/wiki/Welder_certification

    Welder certification is based on specially designed tests to determine a welder 's skill and ability to deposit sound weld metal. The main part of the welder's test consists of welding one or more test coupons which are then examined using non-destructive and destructive methods. The extent of certification is described by a number of variables ...

  9. Spot welding - Wikipedia

    en.wikipedia.org/wiki/Spot_welding

    Spot welding (or resistance spot welding[1]) is a type of electric resistance welding used to weld various sheet metal products, through a process in which contacting metal surface points are joined by the heat obtained from resistance to electric current. The process uses two shaped copper alloy electrodes to concentrate welding current into a ...

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