Electromagnetic Mould Stirring with Higher Supply Frequency

摘要

The use of mould stirring in the continuous casting of steel yields a better surface quality of the cast strands. On the one side, a more uniform thickness of the initial solidified shell is realized by homogenizing the temperature of the molten steel. On the other side, due to the "washing effect" non-metallic inclusions like larger alumina particles and Ar bubbles are removed from the surface layer of the cast strand, where their presence can generate cracks and slivers in the subsequent processes.