Conveners
Continuous Casting Process Fundamentals & Defect Analysis
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Continuous Casting Process Fundamentals & Defect Analysis
- Riccardo Carli (Prosimet SpA)
Description
2.3.1
A simple yet effective method has been developed to simulate macro-segregation during continuous casting. The model focuses on a thin slice moving at the casting speed, incorporating temperature and solid/liquid fraction profiles derived from prior heat transfer and solidification analyses. Solidification is specifically modeled along the thickness direction of the slice.
The model...
Advanced steel grades present significant challenges in casting, and while surface defects cannot be completely avoided, it is crucial to minimize, identify, and predict their occurrence to save energy and resources. In the SMART-CAST II project (funded by Sweden's Innovation Agency), sophisticated measurement systems have been installed in the continuous casting lines of two Swedish steel...
The ductility behavior of continuously cast steel is a key factor influencing strand quality and crack susceptibility. Therefore, investigating the parameters affecting ductility is of great importance for enhancing the productivity of the method by producing defect-free products. This study investigates the differences in ductility behavior between two micro-alloyed steels subjected to hot...
Thin Slab Casting and Rolling processes, such as the Arvedi Endless Strip Production (Arvedi ESP) process, are proven technologies to significantly reduce energy consumption and direct CO2 emission in continuous casting and hot rolling. Due to the increasing use of Electric Arc Furnaces and the use of also low-grade steel scrap, a higher intake of undesired tramp elements, such as Cu or Sn, is...
An overview is given of the ongoing RFCS project SHELL-CRACK. The project offers a new paradigm for the prediction, detection and correction of hot-cracks and surface defects during casting based on Pilot/Lab scale thermo-mechanical experiments combined with numerical simulations. This innovative approach considers not only “material” properties but also specific “process” information to...
Solidification plays a fundamental role in metallurgical processes, such as continuous casting of steel billets, as it greatly influences the final microstructure, in terms of grains morphology and size and chemical segregation. Segregation of solute elements occurs because of their partitioning between the liquid and the growing solid. The liquid interdendritic regions are enriched of solute...
Within the ongoing transformation of the steel industry towards lower CO2 emissions the share of steel produced via electric arc furnace will be rising. Depending on the input material (DRI/HBI, scrap, …) the infiltration of undesirable tramp elements such as Cu, Sn and (Ni) may be unavoidable and due to their special properties removal from the liquid steel is hardly possible.
Defining the...
The steel industry has been undergoing significant transformations over the years, particularly with regards to environmental regulations. Environmental authorities have continuously raised emission limits for the entire sector. This is putting a focus on previously overlooked emission points, such as the caster cooling chamber. Lechler, a renowned nozzle and demister company, is developing...