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  2. Metal spinning - Wikipedia

    en.wikipedia.org/wiki/Metal_spinning

    The foreground shows the mandrel for the base. Behind the finished vase are the spinning tools used to shape the metal. Metal spinning, also known as spin forming or spinning or metal turning most commonly, is a metalworking process by which a disc or tube of metal is rotated at high speed and formed into an axially symmetric part. [1]

  3. Tractor - Wikipedia

    en.wikipedia.org/wiki/Tractor

    The Ford N-series tractor helped revolutionize modern mechanized agriculture with its Ferguson three point hitch. A tractor is an engineering vehicle specifically designed to deliver a high tractive effort (or torque) at slow speeds, for the purposes of hauling a trailer or machinery such as that used in agriculture, mining or construction.

  4. Farmall F-20 - Wikipedia

    en.wikipedia.org/wiki/Farmall_F-20

    Gasoline was not an option, except to start the engine. The rear portal axle used drop gears to raise the clearance underneath the tractor higher than a simple axle would allow. A wide front axle was available as an option. The first tractors were delivered with steel wheels, with pneumatic tires being offered in 1933.

  5. Engine turning - Wikipedia

    en.wikipedia.org/wiki/Engine_turning

    The perlée pattern on the metal panels is one type of engine turning. Engine turning is a form of ornamental turning. The finishing technique may use lathes or engines to produce a pattern. Aluminium is often the metal chosen to decorate. The technique has been used in various industries, including aircraft and document verification.

  6. Bogie - Wikipedia

    en.wikipedia.org/wiki/Bogie

    An articulated bogie (aka Jakob-type) is any one of a number of bogie designs that reduce weight, increase passenger comfort, and allow railway equipment to safely turn sharp corners, while reducing or eliminating the "screeching" normally associated with metal wheels rounding a bend in the rails. There are a number of such designs, and the ...

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  8. Metalworking - Wikipedia

    en.wikipedia.org/wiki/Metalworking

    Turning is a metal cutting process for producing a cylindrical surface with a single point tool. The workpiece is rotated on a spindle and the cutting tool is fed into it radially, axially or both. Producing surfaces perpendicular to the workpiece axis is called facing.

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