BEGIN:VCALENDAR
VERSION:2.0
METHOD:PUBLISH
BEGIN:VEVENT
ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 16b
SUMMARY:Analysis and through process monitoring and control of hydrogen content during liquid steelmaking
DESCRIPTION:The control of hydrogen content in steelmaking has always been an important issue, due to the severe quality problems which are caused by too high hydrogen contents in the final steel product. This leads to high demands regarding lowest hydrogen contents at the end of liquid steelmaking, which requires a vacuum degassing treatment of liquid steel and a tight control along the whole liquid steelmaking and casting process route.
In the RFCS project HydroPick detailed and comprehensive investigations on all mechanisms of hydrogen pick-up and removal throughout the complete process route of liquid steelmaking and casting were performed. The results were used to derive dynamic process models for through process prediction of the hydrogen content evolution under different process conditions of the involved processes.
Regarding the continuous casting process, new and innovative concepts for the tundish with respect to wear lining, preheating, cover powder and fluid flow control of liquid steel were developed, to understand the relevant influencing factors as well as to control and limit the hydrogen pick-up during the casting process. Also, a new system for continuous measurement of the hydrogen content dissolved in liquid steel was developed and applied for monitoring the hydrogen content evolution in the tundish during casting.  
Finally the predictive process models were used to build a through process on-line advisory system for monitoring and control of the hydrogen content evolution, in combination with new measurement strategies, for reliable and effective achievement of the target values. The  hydrogen pick-up is predicted and as far as possible limited, and the process parameters of hydrogen removal during vacuum degassing are controlled, so that the quality-dependent hydrogen target values for liquid steelmaking can be reliably achieved.
The investigations and developments were performed at the steel plants of Dillinger and Sidenor in cooperation with BFI, RHIM and Minkon. 
CLASS:PUBLIC
DTSTART:20230615T145000
DTEND:20230615T151000
END:VEVENT
END:VCALENDAR