발간논문

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Vol.42, No.3, 302 ~ 307, 2004
Title
In-situ Observation of Crystallization of Mold Fluxes Using a Hot Thermocouple Technique
조중욱 Jo Jung Ug , 김성연 Kim Seong Yeon
Abstract
A SHTT (single hot thermocouple technique) has been applied to measure crystallizing temperature and crystallizing rate of molten mold fluxes. It was possible to measure the crystallizing temperature and crystallizing rate of the commercial mold flux using a SHTT reliably, while the crystallizing temperature from DTA and the breaking temperature showed poor reliability. In SHTT, crystallizing temperature was measured at the continuous cooling speed of 100 K/min, and crystallizing initiation time at 1050℃. The crystallizing initiation time generally decreased for the mold flux of higher crystallizing temperature, and there is good interrelationship (R²=0.9588) between two. It is concluded that the SHTT should be considered as the method of quantifying the crystallization behaviors during continuous casting of steel.
Key Words
Mold flux, Crystallization, Hot thermocouple, DTA, Cuspidine, Breaking temperature, Continuous casting, Steel
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