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Title:
INDUCTOR FOR ELECTROMAGNETIC MOLDING
Document Type and Number:
Japanese Patent JP2008055459
Kind Code:
A
Abstract:

To provide an inductor for forming an electromagnetic expanded tube, which has satisfactory cooling properties, excellent strength, and a high level of durability.

This inductor for the electromagnetic expanded tube is inserted into a tubular work from a front end side thereof and expands the work by electromagnetic force. The inductor comprises a conductor 1 wound in a coil form around the outer peripheral face of a shaft 10 and a coolant passage provided at a position between the conductors 1 or at a position between the conductor 1 and the shaft 10 as viewed in a cross section including the central axis of the shaft 10, for allowing the coolant to flow therethrough. The coolant passage is, for example, a coolant tube formed of a metal or an alloy and wound in a coil form by a noninductive winding manner around the outer peripheral face of the shaft 10.


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Inventors:
IMAMURA YOSHIHAYA
EGUCHI NORITAKA
SUGIZAKI TAKAYOSHI
Application Number:
JP2006234599A
Publication Date:
March 13, 2008
Filing Date:
August 30, 2006
Export Citation:
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Assignee:
KOBE STEEL LTD
TECHNO DENKI KOGYO KK
International Classes:
B21D26/14
Domestic Patent References:
JPH03261184A1991-11-21
JP2004243353A2004-09-02
JP2006068774A2006-03-16
Attorney, Agent or Firm:
Masanori Fujimaki



 
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