Title:
HALBACH ARRAY MAGNET, ELECTROMAGNETIC ULTRASONIC SENSOR, DEFECT MEASURING DEVICE, DEFECT MEASURING METHOD, METAL MATERIAL MANUFACTURING METHOD, METAL MATERIAL QUALITY MANAGING METHOD, METAL MATERIAL MANUFACTURING FACILITY, SOLIDIFICATION POSITION MEASURING DEVICE, SOLIDIFICATION POSITION MEASURING METHOD, AND CASTING FACILITY
Document Type and Number:
WIPO Patent Application WO/2023/171314
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a Halbach array magnet, an electromagnetic ultrasonic sensor, a defect measuring device, a defect measuring method, a metal material manufacturing method, a metal material quality managing method, a metal material manufacturing facility, a solidification position measuring device, a solidification position measuring method, and a casting facility that make it possible, even when subjected to repeated thermal load or under a water-cooled environment, to fix in place each of arrayed magnets and to ensure reliability and sensor life. This Halbach array magnet comprises: a magnet portion in which a plurality of magnets are arranged in a Halbach array; a fixing jig which is one or a plurality of non-magnetic bodies that fix each of the magnets of the magnet portion; and a yoke 4 which is a magnetic body and is provided on a surface side different from a side on which a magnetic field created by the magnet portion is deviated.
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Inventors:
NISHIZAWA YUJI (JP)
MIKURIYA TOMOAKI (JP)
NAMIKIRI YOSHIHARU (JP)
TERADA KAZUKI (JP)
MIKURIYA TOMOAKI (JP)
NAMIKIRI YOSHIHARU (JP)
TERADA KAZUKI (JP)
Application Number:
PCT/JP2023/005666
Publication Date:
September 14, 2023
Filing Date:
February 17, 2023
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
H01F7/02; G01N29/24
Foreign References:
| JP2017161454A | 2017-09-14 | |||
| US20080074223A1 | 2008-03-27 | |||
| JP2009284740A | 2009-12-03 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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