C - Chemistry – Metallurgy – 21 – C
Patent
C - Chemistry, Metallurgy
21
C
C21C 7/072 (2006.01) B22D 1/00 (2006.01) C21C 5/48 (2006.01) F27D 3/16 (2006.01)
Patent
CA 2195541
A nozzle for blowing a gas into a molten metal in a stable manner without causing the leakage of gas from its periphery, which has a simple structure and a long life, so that it does not require frequent replacements. The gas blowing nozzle comprises a refractory block formed unitarily with a metallic mounting member and provided with a small diameter through hole therein, and a small-diameter metallic gas blowing tube inserted slidably through the small- diameter hole. When the gas blowing nozzle and the surrounding refractory are worn, the metallic gas blowing tube is extended into the interior of a furnace, and a worn portion is repaired by packing a repairing material therein.
Ajutage servant à injecter un gaz dans un métal en fusion de façon régulière sans provoquer de fuites de gaz depuis sa périphérie et possédant une structure simple et une longue durée de vie, de sorte que des remplacements fréquents ne sont pas nécessaires. Cet ajutage comprend un bloc réfractaire solidaire d'un élément de montage en métal et comporte un perçage de petit diamètre, dans lequel est introduit, de manière à coulisser, un tube métallique de petit diamètre servant à injecter le gaz. Quand l'ajutage et le bloc réfractaire sont usés, on introduit le tube métallique à l'intérieur d'un four et on répare la partie usée en la consolidant avec un matériau de réparation.
Goudreau Gage Dubuc
Japan Casting & Forging Corporation
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