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 purpose of the present invention is to improve the corrosion resistance and thermal shock resistance of a zirconia-carbonaceous refractory for continuous casting and a refractory member. Specifically, this refractory contains 8-16% by mass (inclusive) of a free carbon component, the remainder being a zirconium oxide component as a main component, and the total content of the free carbon component and other components other than the zirconium oxide component being less than 5% by mass. The refractory particles having a particle diameter of more than 0.3 mm are 5% by volume or more and the refractory particles having a particle diameter of 0.045 mm or less are 5-40% by volume (inclusive), when the fraction of the refractory particles excluding the constituent comprising the free carbon component from the constituent of the refractory is taken as 100% by volume, the content of the refractory particles in the refractory is 5-40% by volume (inclusive). 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.
本发明用于提高氧化锆‑碳质的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8质量％以上16质量％以下的游离的碳成分，剩余部分的主成分为氧化锆成分，且游离的碳成分及氧化锆成分以外的其他成分的含量合计小于5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的部分作为100体积％时，粒径超过0.3mm的耐火物粒子为5体积％以上，粒径0.045mm以下的耐火物粒子为5体积％以上40体积％以下，在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 purpose of the present invention is to improve the corrosion resistance and thermal shock resistance of a zirconia-carbonaceous refractory for continuous casting and a refractory member. Specifically, this refractory contains 8-16% by mass (inclusive) of a free carbon component, the remainder being a zirconium oxide component as a main component, and the total content of the free carbon component and other components other than the zirconium oxide component being less than 5% by mass. The refractory particles having a particle diameter of more than 0.3 mm are 5% by volume or more and the refractory particles having a particle diameter of 0.045 mm or less are 5-40% by volume (inclusive), when the fraction of the refractory particles excluding the constituent comprising the free carbon component from the constituent of the refractory is taken as 100% by volume, the content of the refractory particles in the refractory is 5-40% by volume (inclusive). 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.
本发明用于提高氧化锆‑碳质的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8质量％以上16质量％以下的游离的碳成分，剩余部分的主成分为氧化锆成分，且游离的碳成分及氧化锆成分以外的其他成分的含量合计小于5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的部分作为100体积％时，粒径超过0.3mm的耐火物粒子为5体积％以上，粒径0.045mm以下的耐火物粒子为5体积％以上40体积％以下，在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
MATSUMOTO SHIGEFUMI (Autor:in) / LI LING (Autor:in) / TAKAMI KOHEI (Autor:in) / MORIKAWA KATSUMI (Autor:in) / IGATA TETSUO (Autor:in)
15.10.2024
Patent
Elektronische Ressource
Chinesisch
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