NON-CONTACTING MOLTEN METAL FLOW CONTROL

摘要

Systems and methods are disclosed for using magnetic fields (e.g., changing magnetic fields) to control metal flow conditions during casting (e.g., casting of an ingot, billet, or slab). The magnetic fields can be introduced using rotating permanent magnets or electromagnets. The magnetic fields can be used to induce movement of the molten metal in a desired direction, such as in a rotating pattern around the surface of the molten sump. The magnetic fields can be used to induce metal flow conditions in the molten sump to increase homogeneity in the molten sump and resultant ingot.

主权项

1. An apparatus comprising:
a mold for accepting molten metal; and at least one non-contact flow inducer positioned above a surface of the molten metal for generating a changing magnetic field proximate the surface of the molten metal that is sufficient to induce molten flow in the molten metal.