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:
Mar. 07, 2000
Filed:
Apr. 14, 1998
Idar Kjetil Steen, Sunndals.o slashed.ra, NO;
Norsk Hydro ASA, Oslo, NO;
Abstract
Casting equipment for continuous or semi-continuous direct chill casting of metals, in particular casting of slugs or billets of aluminum, includes a mold having a cavity with an inlet which opens upwards, an intermediate overhang which extends along the mold and is thermally insulated (a hot-top) and an outlet with a support which can be moved vertically, as well as a supply means for supplying water for chilling molten metal. The wall of the cavity is formed wholly or partially of a permeable material and oil and/or gas are/is supplied through the permeable material so as to form an oil and/or gas layer between the metal and the wall of the mold. This prevents the metal from coming into direct contact with the mold wall. At least the part of the cavity wall where the oil is supplied to the cavity is made of the same fireproof material as the hot-top and constitutes an integral part of the hot-top.