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

9th International Symposium on Electromagnetic Processing of Materials

材料科学;物理学

Harada, H.^1 ; Nagashima, M.^2 ; Konno, T.^2 ; Yamana, M.^2 ; Toh, T.^3

Nippon Steel and Sumitomo Metal Corporation (Process Research Labs., Futtsu, Japan^1

Nippon Steel and Sumitomo Metal Corporation (Hirohata Steel Works, Himeji, Japan^2

Nippon Steel and Sumikin Technology Co. Ltd (Resource and Process Solution Div., Futtsu, Japan^3

关键词: AC magnetic fields;    Curie Weiss law;    Electric voltage;    Electromagnetic sensors;    Laboratory experiments;    Magnetic transformations;    Surface temperatures;    unbalanced flow;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/424/1/012002/pdf
DOI  :  10.1088/1757-899X/424/1/012002

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

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 at beneath of mold and surface temperature rapidly decreases to Curie temperature (Tc). Laboratory experiments have been performed to verify the principle of the proposed sensor, which is composed of primary and secondary solenoid coil. The obtained experimental results showed that the relationship between the surface temperature of slab and induced electric voltage could be explained by Curie-Weiss law, 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. It can be found that the proposed sensor have potential to measure surface temperature under severe conditions and detect the unbalanced flow in CC strand.