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The Effect of Electromagnetic Stirring on the Speed of the Solidification Front


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DOI: https://doi.org/10.15866/ireme.v11i8.11540

Abstract


This study follows and develops the work we have already done on electromagnetic stirring. This time, we highlight the effect of this stirring during solidification on the structure of a copper-tin alloy.  We have used an experimental device to make an appropriate simulation of the continuous casting. The cooling of our crucible is carried out laterally by a stainless steel crown and at the bottom by a nozzle.   In our experiments we have varied the parameters of which the most important are: the power of the stirring and the flow of cooling gas.  We measured the cooling gases flow rate and its temperature, which allowed us to calculate the heat flow drawn off by this gas.  Other measurements made it possible to determine the solidification front average speed and the values obtained made it possible to calculate theoretically this front position.   In order to characterize the structure of the solidified ingots, an image analysis was carried out.  The various experiments carried out have highlighted the importance of the ratio of the speed of descent of the crucible to the speed of the solidification front. Indeed, the choice of this ratio is very important for the optimization of the solidification process.
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Keywords


Electromagnetic Stirring; Cooper Alloys; Solidification; Speed of Solidification Front

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References


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