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公开(公告)号：US3970444A
公开(公告)日：1976-07-20
申请号：US400423
申请日：1973-09-24
CPC分类号： B22D41/13
摘要： A method of casting steel at a lower overheated temperature during continuous casting, wherein the inner surface of a tundish is heated to a temperature which approximately corresponds to the temperature of the steel in a ladle, the tundish is filled with steel, and the steel is poured into at least one mold. According to the invention a discharge spout of the tundish which opens above the reference level of the metal bath, prior to casting and during heating of the tundish is brought into a position which occupies the lowest point of the inner surface of the tundish, the heating of the tundish is continued until adjusting an approximately stationary thermal gradient between the inner and the outer surfaces of the tundish, and prior to pouring of the steel into the mold the tundish is brought into its casting position.The tundish for the pouring of steel during continuous casting comprises a substantially troughlike lower portion and a domed cover member, at least one bottom nozzle provided for the tundish lower portion, said cover member being provided with an opening for the pouring in of the steel melt from a ladle, and a heating device is arranged above the reference bath level of the tundish. The tundish has a lining possessing a heat conductivity resistance of at least 0.25 m.sup.2.h. .degree.C/Kcal, and is further provided with a discharge spout partially possessing a substantially tubular-shaped cross-section and opening above the reference level of the metal bath. There is also provided means for displacing the tundish about a horizontal axis.
摘要翻译： 在连续铸造期间，在较低的过热温度下铸钢的方法，其中将中间包的内表面加热到大致对应于钢包中钢的温度的温度，中间包被钢填充，钢是 倒入至少一个模具。 根据本发明，在铸造之前和中间包的加热期间，在金属浴的参考水平面上方开口的中间包的排放口进入占据中间包内表面的最低点的位置，加热 的中间包，直到调整中间包的内表面和外表面之间的大致静止的热梯度，并且在将钢浇注到模具中之前，中间包进入其浇铸位置。
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