| 摘要 |
A method of continuously casting a metal, comprising improving a rate of cooling a portion between a casting mold and a billet and increasing the thickness of a consolidated shell by controlling a width of an air gap occurring between the casting mold and billet (consolidated shell) due to the consolidation shrinkage and transformation shrinkage of the billet, and improving the productivity of the continuous casting method and the quality of a molded product by increasing a powder supply rate and reducing the bulging and breakout of the billet and the breakage of the surface thereof. A casting mold for the continuous casting of a metal, comprising: 1) slit nozzles (6) for blowing out a high-pressure fluid therefrom in the downward direction, provided on a bottom surface of a lower portion of the casting mold (l) so that the nozzles are arranged in the direction of the whole of a circumferential portion of the bottom surface so as to surround a billet (3), or at least on the bottom surface constituting a rear surface of the casting mold, 2) a recess (l4) formed in an inner surface of the lower portion of the casting mold (l) in such a manner that an outer surface of the billet (3) and the inner surface of the casting mold are put in a completely non-contacting condition, and in such a manner that the recess extends in the direction of the whole of the circumferential portion of the bottom surface so as to surround the billet (3), or at least in the wear surface, and slit nozzles (6) adapted to blow out a high-pressure fluid therefrom and provided on an upper surface (l5) or a side surface (l6) of the recess, or 3) a box (l) provided on the lower portion of the casting mold (l) so as to be joined thereto, and slit nozzles (6) adapted to blow out a high-pressure fluid therefrom and provided on a bottom surface of the box (l7) or on the upper surface (l5) or side surface (l6) of the recess (l4). |
