Electromagnetic sensor just below CC mold by using magnetic transformation of steel

Electromagnetic sensor to detect the unbalanced flow in CC strand by using the magnetic transformation just below CC mold has been proposed, noticing that the narrow face of slab has been cooled below Curie temperature at the beneath of mold. As preliminary experiments, laboratory experiments have been performed to clarify the relationship between the temperature and induced electric voltage, when AC magnetic field has been imposed on the slab surface. Moreover, plant tests have been conducted by installing the sensor just below the narrow face of mold to show that the proposed sensor could measure surface temperature under severe conditions and detect the unbalanced flow in CC strand.