Electromagnetic shape calibration of tubes

Articles are often formed from a tubular workpiece in a process which does not usefully shape the ends of the tube. In an embodiment of the invention, tube ends may be mechanically reduced in cross section and then expanded against a secondary forming surface(s) using an electromagnetic force to obt...

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Bibliographic Details
Main Authors Bradley, John R, Lovell, Michael H, Marks, Kevin R, Kent, Terry A, Cotton, Donald W
Format Patent
LanguageEnglish
Published 24.01.2012
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Summary:Articles are often formed from a tubular workpiece in a process which does not usefully shape the ends of the tube. In an embodiment of the invention, tube ends may be mechanically reduced in cross section and then expanded against a secondary forming surface(s) using an electromagnetic force to obtain desired shapes for the tube ends and minimize scrapping of workpiece material.