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METHOD FOR EVALUATING PEELING RESISTANCE OF ALUMINA-MAGNESIA QUALITY CASTABLE REFRACTORY
To provide a method for evaluating peeling resistance whether or not an alumina-magnesia quality castable refractory is peeled and worn during use in a lining furnace material of a molten-metal treatment container before actual construction.SOLUTION: A method for evaluating peeling resistance of an alumina-magnesia quality castable refractory in which the castable refractory has a residual linear change ratio after having been fired at a temperature of 1,400°C or higher and 1,600°C or lower in the atmosphere for 3 or more hours of 0% or more, includes: a step of heat-treating the castable refractory at a temperature of 1,400°C or higher and 1,600°C or lower in the atmosphere for 3 or more hours; a step of measuring a coefficient of linear thermal expansion to 1,600°C from a room temperature in the atmosphere of the castable refractory after firing; and a step of determining peeling resistance of an alumina-magnesia quality castable refractory to be evaluated on the basis of a value (%) obtained by subtracting a value of the coefficient of linear thermal expansion at 1,600°C from the maximum value of the coefficient of linear thermal expansion.SELECTED DRAWING: Figure 2
【課題】アルミナ−マグネシア質キャスタブル耐火物が、溶融金属処理容器の内張り炉材への使用中に剥離損耗するか否かの耐剥離性を、実際の施工前に評価する方法を提供する。【解決手段】アルミナ−マグネシア質キャスタブル耐火物の耐剥離性の評価方法であって、前記キャスタブル耐火物が、大気中１４００℃以上１６００℃以下の温度で３時間以上焼成後の残存線変化率が０％以上であって、前記キャスタブル耐火物を大気中１４００℃以上１６００℃以下の温度で３時間以上焼成する工程と、前記焼成後のキャスタブル耐火物について、大気中室温から１６００℃までの線熱膨張率を測定する工程と、前記線熱膨張率の最大値から、１６００℃における前記線熱膨張率の値を差し引いた値（％）に基づいて、評価対象のアルミナ−マグネシア質キャスタブル耐火物の耐剥離性を判断する工程とを含む。【選択図】図２
METHOD FOR EVALUATING PEELING RESISTANCE OF ALUMINA-MAGNESIA QUALITY CASTABLE REFRACTORY
To provide a method for evaluating peeling resistance whether or not an alumina-magnesia quality castable refractory is peeled and worn during use in a lining furnace material of a molten-metal treatment container before actual construction.SOLUTION: A method for evaluating peeling resistance of an alumina-magnesia quality castable refractory in which the castable refractory has a residual linear change ratio after having been fired at a temperature of 1,400°C or higher and 1,600°C or lower in the atmosphere for 3 or more hours of 0% or more, includes: a step of heat-treating the castable refractory at a temperature of 1,400°C or higher and 1,600°C or lower in the atmosphere for 3 or more hours; a step of measuring a coefficient of linear thermal expansion to 1,600°C from a room temperature in the atmosphere of the castable refractory after firing; and a step of determining peeling resistance of an alumina-magnesia quality castable refractory to be evaluated on the basis of a value (%) obtained by subtracting a value of the coefficient of linear thermal expansion at 1,600°C from the maximum value of the coefficient of linear thermal expansion.SELECTED DRAWING: Figure 2
【課題】アルミナ−マグネシア質キャスタブル耐火物が、溶融金属処理容器の内張り炉材への使用中に剥離損耗するか否かの耐剥離性を、実際の施工前に評価する方法を提供する。【解決手段】アルミナ−マグネシア質キャスタブル耐火物の耐剥離性の評価方法であって、前記キャスタブル耐火物が、大気中１４００℃以上１６００℃以下の温度で３時間以上焼成後の残存線変化率が０％以上であって、前記キャスタブル耐火物を大気中１４００℃以上１６００℃以下の温度で３時間以上焼成する工程と、前記焼成後のキャスタブル耐火物について、大気中室温から１６００℃までの線熱膨張率を測定する工程と、前記線熱膨張率の最大値から、１６００℃における前記線熱膨張率の値を差し引いた値（％）に基づいて、評価対象のアルミナ−マグネシア質キャスタブル耐火物の耐剥離性を判断する工程とを含む。【選択図】図２
METHOD FOR EVALUATING PEELING RESISTANCE OF ALUMINA-MAGNESIA QUALITY CASTABLE REFRACTORY
アルミナ−マグネシア質キャスタブル耐火物の耐剥離性の評価方法
MATSUI TSUYOSHI (author)
2020-04-16
Patent
Electronic Resource
Japanese
METHOD FOR EVALUATING PEELING RESISTANCE OF ALUMINA-MAGNESIA QUALITY CASTABLE REFRACTORY
| European Patent Office | 2020
METHOD FOR EVALUATING PEELING RESISTANCE OF ALUMINA-MAGNESIA QUALITY CASTABLE REFRACTORY
| European Patent Office | 2020
METHOD FOR EVALUATING PEELING RESISTANCE OF ALUMINA-MAGNESIA QUALITY CASTABLE REFRACTORY
| European Patent Office | 2020