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  2. Hardfacing - Wikipedia

    en.wikipedia.org/wiki/Hardfacing

    For each industrial application and wear phenomena, there is a welding electrode to provide wear resistance. Hardfacing can be deposited by various welding methods: Shielded metal arc welding; Gas metal arc welding, including both gas-shielded and open arc welding; Oxyfuel welding; Submerged arc welding; Electroslag welding

  3. Aluminium joining - Wikipedia

    en.wikipedia.org/wiki/Aluminium_joining

    Aluminium alloys are often used due to their high strength-to-weight ratio, corrosion resistance, low cost, high thermal and electrical conductivity.There are a variety of techniques to join aluminium including mechanical fasteners, welding, adhesive bonding, brazing, soldering and friction stir welding (FSW), etc. Various techniques are used based on the cost and strength required for the joint.

  4. Weldability - Wikipedia

    en.wikipedia.org/wiki/Weldability

    Many metals and thermoplastics can be welded, but some are easier to weld than others (see Rheological weldability). A material's weldability is used to determine the welding process and to compare the final weld quality to other materials. Weldability is often hard to define quantitatively, so most standards define it qualitatively.

  5. Exothermic welding - Wikipedia

    en.wikipedia.org/wiki/Exothermic_welding

    Exothermic welding, also known as exothermic bonding, thermite welding (TW), [1] and thermit welding, [1] is a welding process that employs molten metal to permanently join the conductors. The process employs an exothermic reaction of a thermite composition to heat the metal, and requires no external source of heat or current.

  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 joining 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. Superhard material - Wikipedia

    en.wikipedia.org/wiki/Superhard_material

    Most metal borides are hard; [41] however, a few stand out among them for their particularly high hardnesses (for example, WB 4, [42] [43] RuB 2, OsB 2 and ReB 2). These metal borides are still metals and not semiconductors or insulators (as indicated by their high electronic density of states at the Fermi Level ); however, the additional ...

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  9. Gas tungsten arc welding - Wikipedia

    en.wikipedia.org/wiki/Gas_tungsten_arc_welding

    GTAW weld area. Manual gas tungsten arc welding is a relatively difficult welding method, due to the coordination required by the welder. Similar to torch welding, GTAW normally requires two hands, since most applications require that the welder manually feed a filler metal into the weld area with one hand while manipulating the welding torch in the other.

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