Tubular refractory product

Details Tubular refractory product Tubular refractory product

1991-03-12

1993-03-30

Kastler, Scott

Dispensing

Molten metal dispensing

With subjacent flow guide

222600, B22D 4108

Patent

active

051981262

ABSTRACT:
A refractory pouring-assembly component for use with a tube changer mechanism comprises an elongate tubular body having a throughbore for pouring of molten metal during continuous casting from a tundish into a mould wherein the refractory pouring component is an isostatically pressed, heat- and wear-resisting refractory one-piece composite body which is shaped to provide at one end a smooth, flat plate surface in which there is defined an aperture, the peripheral edge around said aperture being formed of a hard refractory material to provide a cutting edge around the throughbore, whilst the remainder of said body is formed to a tubular shape from a thermal shock-resistant material to provide for pouring of melt. The compositions of said component may be uniform blends of refractory material bonded by silicon nitride or silicon oxy-nitride or an annulus of selected hard materials within a graphite/alumina host body.

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