| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a device and method for measuring the surface temperature of a cast piece capable of stably measuring the surface temperature of the cast piece for a long time under a severe condition in which a large amount of water, water vapor or the like exists. <P>SOLUTION: The device for measuring the surface temperature of the cast piece includes an excitation coil 2 for applying an alternating current magnetic field substantially vertically to the surface of the cast piece 1, a detection coil 3 for detecting the alternating current magnetic field to detect magnetic field lines changed by the surface temperature of the cast piece 1, and a surface temperature derivation means for deriving the surface temperature of the cast piece 1 from induced electromotive force obtained by detecting the alternating current magnetic field by the detection coil and previously determined correspondence relationship data. The detection coil 3 is arranged between the surface of the cast piece 1 and the excitation coil 2. The correspondence relationship data are characterized by expressing the correspondence relationship between the surface temperatures of the cast piece in a previously determined temperature range including the Curie point and the induced electromotive forces. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
