| 摘要 |
PROBLEM TO BE SOLVED: To enhance a heat-retention property on a molten metal surface inside a mold while reducing environmental contamination. SOLUTION: The mold powder is a granulated mold powder in which an expandable graphite is blended. The bulk density thereof after granulated mold powder is thermally collapsed at the heating time and the carbon containing the expandable graphite is frazzled is smaller than the bulk density of the mixed material of raw material powder other than the carbon raw material, and is≤0.65 g/cc. In this way, when the molten metal of steel or the like is continuously casting, it is compatibly possible to reduce environmental contamination and also to enhance the heat-retention property on the molten metal surface inside the mold. COPYRIGHT: (C)2008,JPO&INPIT
|
