Abstract
Electromagnetic transport (EMT) process with plane induction electromagnetic pump (EMP) was developed for the transport of liquid aluminum alloy during casting. The temperature rise of liquid aluminum alloy when flowing into and out of the pump ditch of the EMP during the EMT process was gained by magnetic-thermal coupling analysis. The flow field and the effects of structural design and transport technological parameters on the transient and stable EMT performance of the engineering EMT prototype were obtained by magnetic-flow coupling analysis. The extra temperature rise effect accompanied with the EMT process can be neglected since the EMP induced local maximum and average temperature rises corresponding to a common sojourn time of 1.16s are only 1.3°C and 0.6°C, respectively. Two recirculation zones distribute symmetrically along both sides of the central main flow in the pump ditch and the transition transport tube. Sequential air exhaust and outflow appear when the cross-sectional area shrunken ratio from the rectangular pump ditch to the circular transport tube is 0.472. The stable outlet flow rate increases with the diameter of the circular transport tube (d) due to the weakening of recirculation zones, and it increases linearly with the transport current (I), while it decreases with the initial transport height. The morphology of the stable flow field is not affected by I.
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