Patent ID: 9475120
Filing Date: 2016-10-25
CPC Classification: B22D

Claim Text:
1. An apparatus for dispersing particles within a molten material in a mold-less casting process, the apparatus comprising: a primary electromagnet for generating an AC magnetic field and a secondary electromagnet adjacent to the primary electromagnet for generating an independent DC magnetic field, each of the primary and secondary electromagnets comprising a coil, the coil of the primary electromagnet comprising coil windings having a nonuniform spacing, and at least one of the primary and secondary electromagnets being positioned about a common longitudinal axis; a heat source for forming a melt to be exposed to the AC and DC magnetic fields generated by the primary and secondary electromagnets; a particle injection device disposed at one or more positions about the common longitudinal axis for injecting particles into the melt during magnetic field exposure, wherein the apparatus does not include a mold for containing the melt prior to solidification, the AC magnetic field generated by the primary electromagnets supplying a gradient electromagnetic pressure to contain the melt.