The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 05, 1987
Filed:
Jun. 22, 1983
Hugh R Lowry, Fairfield, CT (US);
Robert T Frost, Berwyn, PA (US);
General Electric Company, Bridgeport, CT (US);
Abstract
Apparatus for producing dense homogeneous metal cast in long lengths by introducing liquid metal into the lower portion of a casting vessel in the presence of an elongated upwardly-traveling alternating electromagnetic levitation field that provides a levitation ratio of from 75% to 200% of the weight per unit length of the liquid metal. The apparatus provides cooling for solidifying the metal while moving upwardly through the field, and a withdrawal mechanism for removing solidified metal product from the upper portion of the field. The electromagnetic field producing means is designed to establish an alternating electromagnetic field having a frequency at or near a value F=36.rho./D.sup.2 where F is the frequency in kilohertz, .rho. is the resistivity of the liquid metal column in micro-ohm-centimeters and D is the average diameter of the solidified metal rod product in millimeters.