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

• Current Assignee: Alexandr Tikhonovich Mezhuev, Anatoly Vasilievich Legeza, Evgeny Nikolaevich Degtyarev, Lev Timofeevich Khimenko, Mikhail Ivanovich Baranov
• Original Assignee: Alexandr Tikhonovich Mezhuev, Anatoly Vasilievich Legeza, Evgeny Nikolaevich Degtyarev, Lev Timofeevich Khimenko, Mikhail Ivanovich Baranov
• Inventors: Khimenko, Lev Timofeevich, Mezhuev, Alexandr Tikhonovich, Baranov, Mikhail Ivanovich, Degtyarev, Evgeny Nikolaevich, Legeza, Anatoly Vasilievich
• Primary Examiner(s): Gilden, Leon
• Application Number:
  US05/676,398
• Time in Patent Office: 638 Days
• Field of Search: 72/54, 72/56, 72/62, 72/DIG. 26, 29/421 M
• US Class Current: 72/56
• CPC Class Codes: B21D 26/14 applying magnetic forces
• CPC Class Codes: H01F 7/202 Electromagnets for high magnetic field strength for superconducting electromagnets H01F6/00; for transformers or inductances without a magnetic core H01F30/08
• CPC Class Codes: Y10T 29/49803 Magnetically shaping

Abstract

Disclosure is made of an inductor for magnetic pulse shaping of metals, wherein on the outer surface of a concentrator, having a radial slot and an opening to receive an article being worked, there are provided flutes with windings disposed therein; in the radial slot zone, the concentrator ribs are provided with rectangular-shaped grooves whose depth is equal to that of the flutes, said grooves extending perpendicularly to the plane of the radial slot and receiving electrically conducting segment-shaped inserts overlapping the radial slot and insulated from the concentrator by gaskets.

Claims

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.

2. An inductor as defined in claim 1, wherein two annular flutes are provided to form three annular ribs.