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  2. Metal fabrication - Wikipedia

    en.wikipedia.org/wiki/Metal_fabrication

    Workers welding in parking garage. Welding is the main focus of steel fabrication. [8] Formed and machined parts are assembled and tack-welded in place, then rechecked for accuracy. If multiple weldments have been ordered, a fixture may be used to locate parts for welding. A welder then finishes the work according to engineering drawings (for ...

  3. Fractal burning - Wikipedia

    en.wikipedia.org/wiki/Fractal_burning

    A 2020 review noted that the mortality rate of fractal wood burning cases was "significant" and "exceedingly high". [7] The American Association of Woodturners has, on safety grounds, banned any demonstrations or sales related to the practice at its events, strongly discourages any of its chapters from promoting the practice, and refuses to ...

  4. Welding - Wikipedia

    en.wikipedia.org/wiki/Welding

    All arc welding processes use a welding power supply to create and maintain an electric arc between an electrode and the base material to melt metals at the welding point. They can use alternating current (AC) or direct current (DC). For DC welding, the electrode can be connected to the machine's positive terminal (DCEP) or negative terminal ...

  5. Cupola furnace - Wikipedia

    en.wikipedia.org/wiki/Cupola_furnace

    Wood, charcoal, or biomass may also be used as fuel for the cupola's fire. Flammable gases also can be added to air and blown through the tuyere section of the furnace to add fuel to the fire. When the coke is very hot, solid pieces of metal are charged into the furnace through an opening in the top.

  6. Metalworking - Wikipedia

    en.wikipedia.org/wiki/Metalworking

    In woodworking, the waste would be sawdust and excess wood. In cutting metals the waste is chips or swarf and excess metal. Cutting processes fall into one of three major categories: Chip producing processes most commonly known as machining; Burning, a set of processes wherein the metal is cut by oxidizing a kerf to separate pieces of metal

  7. Oxy-fuel welding and cutting - Wikipedia

    en.wikipedia.org/wiki/Oxy-fuel_welding_and_cutting

    In oxy-fuel welding, a welding torch is used to weld metals. Welding metal results when two pieces are heated to a temperature that produces a shared pool of molten metal. The molten pool is generally supplied with additional metal called filler. Filler material selection depends upon the metals to be welded.

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