B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
25/102, 22/80
B22D 41/08 (2006.01) B22D 41/28 (2006.01)
Patent
CA 1202464
ABSTRACT The invention is concerned with a method of manufacturing a composite refractory article having a flow passage through which a molten metal stream may be conducted and comprising a first body of refrac- tory material which defines a surface of that passage, the first body being bonded to a second body of re- fractory material. The method of the invention is characterized in that the second body defines a passage- way of greater cross-sectional dimensions than the flow passage and that the first body of refractory material is provided within such passageway for defining the flow passage surface, the first body being formed in the larger passageway by causing its refractory material to cohere and bond to the second body by fusion or partial fusion in situ. The composite refractory article thus obtained has the first body located within a passageway formed in the second body, such passageway being of greater cross-sectional dimensions than the flow passage so that the first body coheres and bonds to the second body by fusion or partial fusion of those bodies at least at their joint. The first re- fractory body may be composed of fused or partially fused refractory material and it may be a relatively high grade refractory body while the second body is a lower grade refractory body.
414840
Deschepper Pierre
Robyn Pierre
Glaverbel
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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