Experimental Investigations on Solidification of 500-kg Steel Ingots with Laboratory Trials
Journal Article
·
· Metallurgical and Materials Transactions B, Process Metallurgy and Materials Processing Science
- RWTH Aachen University, Department of Ferrous Metallurgy (Germany)
The present work focuses on the solidification process of large steel ingots. Several complex solidification phenomena in large ingots were investigated by means of experimental hot modeling and cold modeling. In hot modeling, a 500 kg ingot solidified slowly in a specially insulated mold and this slow solidification process simulates the solidification of industrial scale ingots with a weight between 3 and 6 t. Temperature was measured by thermocouples during solidification and curves were plotted, and as-cast structure and macrosegregation of alloying elements were quantified. The A segregates were produced in the laboratory hot trials and quantitatively investigated. Meanwhile, water modeling (cold modeling) using NH{sub 4}Cl solution was conducted with different cooling/heating conditions. Macroscopic crystal growth phenomena, such as dendritic growth, sedimentation of crystals, and convective fluid flow, were directly observed and analyzed, and flow channels were also observed and compared with A segregates in the hot modeling.
- OSTI ID:
- 22857849
- Journal Information:
- Metallurgical and Materials Transactions B, Process Metallurgy and Materials Processing Science, Journal Name: Metallurgical and Materials Transactions B, Process Metallurgy and Materials Processing Science Journal Issue: 5 Vol. 49; ISSN 1073-5615; ISSN MTBSEO
- Country of Publication:
- United States
- Language:
- English
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