Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Refractory for continuous casting and refractory member
The present invention improves the corrosion resistance and thermal shock resistance of a refractory for continuous casting and a refractory component. Specifically, this refractory contains 10-30 mass% of a free carbon component, the remainder being composed of one or more substances selected from corundum, spinel, and periclase, the periclase content being less than 40 mass%, and the total content of a silica component and a silicon carbide component being less than 15 mass%. Refractory particles having a particle diameter of more than 0.3 mm are 20 vol% or more and refractory particles having a particle diameter of 0.045 mm or less are 3-30 vol% (inclusive) when the content of the refractory particles excluding the constituent comprising a free carbon component from the constituent of the refractory is taken as 100 vol%. A substantially continuous void layer having a shape similar to that of a coarse particle is present around at least the coarse particle having the largest particle size. The refractory has an apparent porosity of 16% or less and a maximum coefficient of thermal expansion of 0.6% or less at 1500 DEG C.
本发明用于提高连续铸造用的耐火物及耐火物部件的耐腐蚀性及耐热冲击性。具体而言，本发明的耐火物包含10质量％以上30质量％以下的游离的碳成分，剩余部分的主矿物相由选自刚玉、尖晶石及方镁石中的1种或2种以上构成，所述方镁石的含量小于40质量％，且二氧化硅成分及碳化硅成分的含量合计小于15质量％。在将从该耐火物的构成物中除去由游离的碳成分构成的构成物以外的部分作为100体积％时，粒径超过0.3mm的耐火物粒子为20体积％以上，粒径0.045mm以下的耐火物粒子为3体积％以上30体积％以下，该耐火物中的耐火物粒子之中，至少在最大粒子尺寸的粗大粒子的周围，存在有与该粗大粒子的形状相似的大致连续的空隙层。该耐火物的表观气孔率为16％以下，至1500℃为止的最大的热膨胀系数为0.6％以下。
Refractory for continuous casting and refractory member
The present invention improves the corrosion resistance and thermal shock resistance of a refractory for continuous casting and a refractory component. Specifically, this refractory contains 10-30 mass% of a free carbon component, the remainder being composed of one or more substances selected from corundum, spinel, and periclase, the periclase content being less than 40 mass%, and the total content of a silica component and a silicon carbide component being less than 15 mass%. Refractory particles having a particle diameter of more than 0.3 mm are 20 vol% or more and refractory particles having a particle diameter of 0.045 mm or less are 3-30 vol% (inclusive) when the content of the refractory particles excluding the constituent comprising a free carbon component from the constituent of the refractory is taken as 100 vol%. A substantially continuous void layer having a shape similar to that of a coarse particle is present around at least the coarse particle having the largest particle size. The refractory has an apparent porosity of 16% or less and a maximum coefficient of thermal expansion of 0.6% or less at 1500 DEG C.
本发明用于提高连续铸造用的耐火物及耐火物部件的耐腐蚀性及耐热冲击性。具体而言，本发明的耐火物包含10质量％以上30质量％以下的游离的碳成分，剩余部分的主矿物相由选自刚玉、尖晶石及方镁石中的1种或2种以上构成，所述方镁石的含量小于40质量％，且二氧化硅成分及碳化硅成分的含量合计小于15质量％。在将从该耐火物的构成物中除去由游离的碳成分构成的构成物以外的部分作为100体积％时，粒径超过0.3mm的耐火物粒子为20体积％以上，粒径0.045mm以下的耐火物粒子为3体积％以上30体积％以下，该耐火物中的耐火物粒子之中，至少在最大粒子尺寸的粗大粒子的周围，存在有与该粗大粒子的形状相似的大致连续的空隙层。该耐火物的表观气孔率为16％以下，至1500℃为止的最大的热膨胀系数为0.6％以下。
Refractory for continuous casting and refractory member
连续铸造用的耐火物及耐火物部件
LI LING (Autor:in) / MORIKAWA KATSUMI (Autor:in) / MATSUMOTO SHIGEFUMI (Autor:in)
15.10.2024
Patent
Elektronische Ressource
Chinesisch
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