Mandrel

A mandrel (/ˈmændrl/; also mandril or arbor) is one of the following:

  • an object used to shape machined, or electroformed, work.
  • a tool component that grips or clamps materials to be machined.
  • a tool component that can be used to grip other moving tool components.
  • Variants

    An example of one type of mandrel is a shaped bar of metal inserted in, or next to, an item to be machined or bent in a certain pattern. Exhaust pipes for automobiles are frequently bent using a mandrel during manufacture. The mandrel allows the exhaust pipes to be bent into smooth curves without undesirable creasing, kinking, or collapsing. Molten glass may be shaped in this way as well. Another example of this type of mandrel is found in jewelry manufacturing, where ring and bracelet mandrels are used to shape metal into a desired size and shape, using a tiny hammer to beat the metal against the mandrel.

    Tube bending

    Tube bending is the umbrella term for metal forming processes used to permanently form pipes or tubing. One has to differentiate between form-bound and freeform-bending procedures, as well as between heat supported and cold forming procedures.

    Form bound bending procedures like “press bending” or “rotary draw bending” are used to form the work piece into the shape of a die. Straight tube stock can be formed using a bending machine to create a variety of single or multiple bends and to shape the piece into the desired form. These processes can be used to form complex shapes out of different types of ductile metal tubing. Freeform-bending processes, like three-roll-pushbending, shape the workpiece kinematically, thus the bending contour is not dependent on the tool geometry.

    Generally, round stock is what is used in tube bending. However, square and rectangular tubes and pipes may also be bent to meet job specifications. Other factors involved in the tube bending process is the wall thickness, tooling and lubricants needed by the pipe and tube bender to best shape the material and it is also used in different ways e.g.( tube,pipe wires).

    No. 515 Squadron RAF

    No. 515 Squadron RAF was a squadron of the Royal Air Force formed during the Second World War. It ushered in Electronic countermeasures (ECM) warfare, jamming enemy radar installations from October 1942 as the only such squadron in the RAF initially. Later in the war 515 Sqn was joined by other squadrons as part of No. 100 Group RAF. The squadron disbanded after VE day, when the need for such a specialised squadron had reduced.

    History

    Fighter Command

    The squadron was formed from Defiant Flight, also known as Special Duties Flight, at RAF Northolt on 1 October 1942, equipped with Boulton Paul Defiant Mk.II redundant night-fighters. As part of No. 11 Group RAF 515 Sqn performed radar jamming duties with Moonshine and Mandrel, moving to RAF Heston later that month, and was re-equipped with Bristol Beaufighter Mk.IIf aircraft from May 1943.

    Bomber Command

    The squadron transferred to No. 100 Group RAF in December 1943 as part of Bomber Command, and moved to RAF Little Snoring in Norfolk. There they re-equipped with de Havilland Mosquito Mk.VIs in March 1944, and operated these for the remainder of the war. At the time of its disbandment on 10 June 1945, 515 squadron had carried out 1,366 operational sorties with the Mosquito with a loss of 21 aircraft, with most of its aircrew transferring to No. 627 Squadron RAF. T

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    Latest News for: mandrel

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    Tallahassee Democrat 07 Mar 2025
    Here's what Darryll Desir said about wanting to playing for FSU football and being close with his twin brother, Mandrell ... Florida State football's freshmen Darryll and Mandrell Desir are inseparable.
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