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Inductor for magnetic pulse shaping of metals

  • US 4,067,216 A
  • Filed: 04/12/1976
  • Issued: 01/10/1978
  • Est. Priority Date: 04/12/1976
  • Status: Expired due to Term
First Claim
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1. An inductor for magnetic pulse shaping of metals, comprising a concentrator having a radial slot and an axial opening to receive an article to be worked, said concentrator also having circumferential annular flutes on the outer surface thereof which are axially spaced from each other to form annular ribs;

  • a winding laid in said flutes;

    rectangular-shaped grooves provided in said ribs of said concentrator, the depth of said grooves being equal to that of said flutes, said grooves extending perpendicularly to the plane of said radial slot; and

    electrically conducting, segment-shaped inserts disposed in said grooves, insulated from said concentrator and overlapping or bridging said radial slot, said inserts being generally coextensive with the outer peripheral surface of said concentrator, whereby the electromagnetic fields of the coils of said winding are significantly shielded to thereby reduce the magnetic flux in said radial slot between said winding coils and decrease the axial and radial electrodynamic forces acting on the turns of said winding.

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