METHOD AND APPARATUS FOR PRODUCING HOLLOW FUSING BLOCKS
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United States of America Patent
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Issued Date -
Sep 8, 2011
app pub date -
Mar 2, 2011
filing date -
Mar 2, 2010
priority date (Note) -
Abandoned
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Abstract
To produce hollow ingots, at least two consumable electrodes having a diameter of at least 1.0 times the wall thickness of the hollow ingots are melted in a short, water-cooled mold that is flared particularly in a T-shape in the area of the consumable electrodes, wherein the inner wall of the hollow ingot is formed by a mandrel with a conicity of at least 1.5% that is installed in the mold from above, and the level of the liquid heel is maintained below the T-shaped flaring of the mold.
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