REFRACTORY AND PLATE FOR SLIDING NOZZLE
PROBLEM TO BE SOLVED: To provide a refractory which contains AlOC, has AlOC specific characteristics such as low thermal expansion and low elastic modulus and dense and firm matrix and can be inhibited from extremely degrading caused by large deterioration of AlOC due to heat receiving during castin...
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Format: | Patent |
Sprache: | eng ; jpn |
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a refractory which contains AlOC, has AlOC specific characteristics such as low thermal expansion and low elastic modulus and dense and firm matrix and can be inhibited from extremely degrading caused by large deterioration of AlOC due to heat receiving during casting, and to provided a plate for a sliding nozzle using the refractory.SOLUTION: There is provided the refractory which contains AlOC, AlO, free carbon and SiO, the content of AlOC being 15 mass% to 40 mass%, the content of the free carbon being 3 mass% to 7 mass%, the content of SiObeing 1 mass% to 5 mass%, the mass ratio of SiO/AlOC being 0.025 to 0.20 and the total content of AlOC, AlOand the free carbon being 90 mass% or more.SELECTED DRAWING: None
【課題】Al4O4Cを含有する耐火物であって、低熱膨張率、低弾性率というAl4O4C固有の特徴を有していると共に、緻密で強固なマトリックスを持ち、鋳造中の受熱によるAl4O4Cの大幅な変質による著しい劣化も抑制できる耐火物、及びその耐火物を使用したスライディングノズル用プレートを提供する。【解決手段】Al4O4C、Al2O3、フリーの炭素及びSiO2を含有し、Al4O4Cの含有量が15質量%以上40質量%以下、フリーの炭素の含有量が3質量%以上7質量%以下、SiO2の含有量が1質量%以上5質量%以下、SiO2/Al4O4Cの質量比が0.025以上0.20以下であり、かつ、Al4O4C、Al2O3及びフリーの炭素の含有量の合計が90質量%以上である耐火物。【選択図】なし |
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