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US 4,047,556 AGranted
Continuous casting method
AssigneesNippon Steel Corporation, Hitachi Cable, Ltd.
InventorsTatsuichi Obinata, Kaname Wada, Shigeaki Ogibayashi, Hironobu Mihara
Life of this patent
Estimating the term…
Abstract
A method for producing steels by continuous casting, in which an addition material composed of an addition metal or alloy in the form of wire and a cover metal covering the addition metal or alloy is dissolved at a predetermined depth of the molten steel in a mold for continuous casting, and the cover metal prevents the addition metal from dissolving at undesired position in the molten steel, thus very advantageous for production of high grade steels and cored steels.
Claims11
A method of producing steel comprising:
- continuously feeding an addition material in a wire form to molten steel in a mold for continuous casting at a predetermined feeding speed corresponding to a desired addition of the addition material, said addition material being composed of an addition metal in wire form and a covering metal thereon, said covering metal being a metal of low reactivity and having a thickness which dissolves at a predetermined depth in the molten steel, bringing the addition material in the wire form into contact with the molten steel, and dissolving the addition metal at a predetermined depth in the molten steel, said cover being made of a metal or alloy of low reactivity, having its side portions being overlapped with each other along its lengthwise direction, and tightly covering said addition metal.
Dependencies are inferred from the claim text.