Importance

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Abstract

Method and apparatus employing a casting mould including a liquid feed end for supplying the casting mould with molten second alloy and an exit end with an outlet for casting molten second alloy downwardly. While continuously moving the mould and an elongated solid first alloy substrate relative to one another, casting molten second alloy passes downwardly through at least one outlet of the mould onto an upper surface of the substrate at a temperature wherein the substrate locally at least partly remelts beginning at a reference point of a remelting zone and mixes at least partly with molten second alloy to form an alloy pool. After remelting the molten alloy pool continuously cools and solidifies at a location away from the reference point and joins the substrate to form composite ingot including at least two separately formed layers of one or more alloys before discharging from the mould.

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First Claim