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VERSION:2.0
METHOD:PUBLISH
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ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 19b
SUMMARY:Experimental simulation of defect formation in slab casting of Nb-micro-alloyed steel: Influence of cooling conditions
DESCRIPTION:The in-situ bending test IMC-B provides the characterization of the crack sensitivity of steel after controlled solidification and subsequent cooling. The present study investigates the influence of varying cooling conditions on the surface defect sensitivity of low and medium carbon steel with 0.02-0.04 wt.-% Nb. Standard cooling as well as “soft cooling” and “hard cooling” strategies for slab casting are investigated. The results indicate a significantly higher crack sensitivity for hard cooling than the soft cooling strategy. The simulation of the corner temperature history also considerably shifts the ductility trough towards lower temperatures. The findings confirm the experience of slab casting operation.
Finally, the bending test results and grain size measurement are applied for benchmarking the recently developed commercial defect monitoring tool for continuous casting, SQI. The results point to excellent correspondence and show the high potential of smart online quality prediction based on thermodynamics and process data for the future.
CLASS:PUBLIC
DTSTART:20230614T090000
DTEND:20230614T092000
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