CAST PIECE SURFACE TEMPERATURE MEASURING DEVICE AND CAST PIECE SURFACE TEMPERATURE MEASURING METHOD

Title:

CAST PIECE SURFACE TEMPERATURE MEASURING DEVICE AND CAST PIECE SURFACE TEMPERATURE MEASURING METHOD

Document Type and Number:

WIPO Patent Application WO/2010/119594

Kind Code:

A1

Abstract:

A cast piece surface temperature measuring device comprises a magnetic field excitation means for applying an AC magnetic field to the surface of a cast piece substantially perpendicularly thereto, a magnetic field detection means for detecting the AC magnetic field in order to detect the magnetic lines of force which has changed due to the surface temperature of the cast piece, and a surface temperature derivation means for deriving the surface temperature of the cast piece from an induced electromotive force which is obtained by detecting the AC magnetic field by the magnetic field detection means and predetermined correspondence data. The magnetic field excitation means has an excitation coil in the shape of a solenoid, the magnetic field detection means has a detection coil in the shape of a solenoid arranged between the surface of the cast piece and the excitation coil, and the correspondence data is the data representing the correspondence of the surface temperature of the cast piece and the induced electromotive force in a predetermined temperature interval including the Curie temperature.

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Inventors:

HARADA HIROSHI (JP)
YAMANA MASANORI (JP)
SAIDA ATSUSHI (JP)
NAGASHIMA MASAKI (JP)
KONNO TOMOHIRO (JP)

Application Number:

PCT/JP2010/000081

Publication Date:

October 21, 2010

Filing Date:

January 08, 2010

Export Citation:

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Assignee:

NIPPON STEEL CORP (JP)
HARADA HIROSHI (JP)
YAMANA MASANORI (JP)
SAIDA ATSUSHI (JP)
NAGASHIMA MASAKI (JP)
KONNO TOMOHIRO (JP)

International Classes:

G01K7/36; B22D2/00; G01K13/00

Foreign References:

JPH05223653A	1993-08-31
JPH02168130A	1990-06-28
JPS5461031A	1979-05-17
JP2008256605A	2008-10-23
JPS567456A	1981-01-26

Other References: