Continuous casting of steel
AssigneeJ. Mulcahy Enterprises Incorporated
InventorJoseph A. Mulcahy
Life of this patent
Estimating the term…
Abstract
In the continuous casting of steel, surface imperfections associated with the use of an oscillating bar for removal of the cast billet from the mold are substantially eliminated by providing a pulsating high intensity magnetic field around the mold to cause flexing of the metal to detach solidified metal from the internal wall of the mold.
Claims15
In a method of continuous casting of molten metals by passing the molten metal through a cooled elongate molding zone to effect solidification of the same and removing the solidified metal from the molding zone, the improvement which comprises subjecting said molten metal in said molding zone to a rapidly pulsating high intensity magnetic field to cause inward flexure of said molten metal.
A molding apparatus suitable for the continuous casting of metals, comprising:
- an elongate tubular mold defining a molding cavity therein, having inner and outer walls and having an inlet for molten metal at one end and an outlet for solidified metal in billet form at the other end, said mold being constructed of electroconductive material;
- an annular cavity surrounding and spaced from the outer surface of the tubular mold to define an annular flow passage for the passage of cooling water from one end to the other;
- first annular housing means enclosing a first cavity communicating with one end of said annular flow passage and also communicating with an inlet for cooliing water;
- second annular housing means enclosing a second cavity communicating with the other end of said annular flow passage and also communicating with an outlet for cooling water;
- an electrical coil associated with said tubular mold to apply a magnetic field to said mold upon the passage of an electrical current therethrough, and
- means for applying a pulsating d.c. current to said electrical coil to produce a pulsating high intensity magnetic field which induces movement of said mold to decrease the cross-sectional dimension of said molding cavity.
Dependencies are inferred from the claim text.