BEGIN:VCALENDAR
VERSION:2.0
METHOD:PUBLISH
BEGIN:VEVENT
ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 18a
SUMMARY:Optimization for refining of molten steel through bottom bubbling in VD process 
DESCRIPTION:Vaccum degassing (VD) of steel melts during ladle treatment is an important process for removal and control of detrimental impurity elements. In order to complete homogenization and refining of molten steel in a short time, the molten steel is stirred by Ar gas injection from bottom of ladle during VD process. In the present study, a vibration-based monitoring system for gas injection was applied to consistently control the stirring intensity of volumetric Ar gas injection during VD process because various operation conditions in ladle affect the flow rate of Ar gas injection. The vibration energy generated by gas injection in the molten steel during VD process was measured on the wall of vessel in vacuum tank degasser. The vibration-based monitoring system was optimized by the various plant trials observing consistency of composition in the molten steel. The plant trials during VD process showed that the increase in stirring intensity enhances the removal rate of impurities and homogenization of molten steel in the ladle.
CLASS:PUBLIC
DTSTART:20230615T094000
DTEND:20230615T100000
END:VEVENT
END:VCALENDAR