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  2. Machining - Wikipedia

    en.wikipedia.org/wiki/Machining

    CNC machine pouring coolant to keep the tool and parts from getting hot Lathe machine. Machining is a manufacturing process where a desired shape or part is created using the controlled removal of material, most often metal, from a larger piece of raw material by cutting.

  3. Ultrasonic machining - Wikipedia

    en.wikipedia.org/wiki/Ultrasonic_machining

    Schematic of ultrasonic machining process An ultrasonic drill from 1955. Ultrasonic machining is a subtractive manufacturing process that removes material from the surface of a part through high frequency, low amplitude vibrations of a tool against the material surface in the presence of fine abrasive particles.

  4. Brazing - Wikipedia

    en.wikipedia.org/wiki/Brazing

    Brazing practice. Brazing is a metal-joining process in which two or more metal items are joined by melting and flowing a filler metal into the joint, with the filler metal having a lower melting point than the adjoining metal.

  5. Bessemer process - Wikipedia

    en.wikipedia.org/wiki/Bessemer_process

    Bessemer converter, schematic diagram. The Bessemer process was the first inexpensive industrial process for the mass production of steel from molten pig iron before the development of the open hearth furnace.