Tubular refractory product
AssigneeThor Ceramics Limited
InventorStephen J. Lee
Life of this patent
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Abstract
A refractory pouring-assembly component for use with a tube changer mechanism, the component having a throughbore for pouring of molten metal during continuous casting from a tundish into a mould and being isostatically pressed from different heat- and wear-resisting reffactories to form a one-piece composite body having at one end a smooth, flat plate surface in which there is defined an aperture, at least the peripheral edge around said aperture being formed of a hard refractory material to provide a cutting edge around the through-bore, whilst the remainder of said body is formed from a thermal shock-resistant material to provide for pouring of melt.
Claims13
A refractory pouring assembly component constructed for use with a tube changer mechanism in the continuous casting of steel, said component having a throughbore and being formed of varying refractory compositions exhibiting different wear and thermal shock-resisting properties which are pressed together and co-molded to form a one-piece composite member, said member including an end portion defining a flat plate surface having an opening from said throughbore and a tubular main body portion, the member having a joint free transition from said end portion to said main body portion, said end portion having a peripheral edge around said opening formed of a first wear-resistant refractory composition which is comparatively harder than said tubular main body portion, and said tubular main body portion being formed throughout its length from another refractory composition which is more thermal shock-resistant and softer than said peripheral edge formed from said first composition.
A refractory pouring assembly component constructed for use with a tube changer mechanism in the continuous casting of steel, said component having a throughbore and being formed of varying refractory compositions exhibiting different wear and thermal shock-resisting properties which are pressed together and co-molded to form a joint free one-piece composite member having an end portion including a flat plate surface and a main body portion, said end portion being formed from a first refractory composition having less thermal shock resistance but greater hardness than said main body portion, and said main body portion being formed throughout from another refractory composition having greater thermal shock resistance and lower hardness than said end portion.
Dependencies are inferred from the claim text.