Giesspulver für das Stranggiessen und Verfahren zur Verwendung des Pulvers

摘要

A mold powder for continuous steel casting, containing CaO, SiO2 and fluoride as the main components. The ratio by weight of CaO', represented by the following equation, to SiO2 is 0.9-2.8 and the CaF2 content is about 5-60 wt.%. The powder contains Na2O in an amount of 0-25 wt.% and C in an amount of 0-10 wt.%. $wherein\; T.CaO\; represents\; the\; total\; Ca\; content\; in\; the\; mold\; powder\; as\; converted\; to\; CaO(wt.\%)\; and\; F\; represents\; the\; total\; F\; content\; in\; the\; mold\; powder(wt.\%).\; Also\; disclosed\; is\; a\; method\; for\; continuous\; steel\; casting\; which\; makes\; use\; of\; the\; mold\; powder.\mathop{\mathrm{image}}$