| 摘要 |
<p>Continuously or semi-continuously producing hot steel strip starting from a strand, which is guided into a pre-rolling mill through a strand guiding device to form an intermediate strip, and is subsequently rolled in a finishing rolling mill to form an end strip, comprises casting the strand in a casting die of a casting plant, where the strand is reduced to a strand thickness of 60-95 mm, preferably 70-85 mm at a liquid cross-sectional core of the strand, in a liquid core reduction process using the adjoining strand guiding device. The strand exhibits a casting speed of 3.8-7 m/minute. Continuously or semi-continuously producing hot steel strip starting from a strand, which is guided into a pre-rolling mill through a strand guiding device to form an intermediate strip, and is subsequently rolled in a finishing rolling mill to form an end strip, comprises casting the strand in a casting die of a casting plant, where the strand is reduced to a strand thickness of 60-95 mm, preferably 70-85 mm at a liquid cross-sectional core of the strand, in a liquid core reduction process using the adjoining strand guiding device. The strand exhibits a strand support length measured between the meniscus, which is the bath level of the casting die and an end of the strand guiding device facing the pre-rolling mill, of 12-16.5 m, preferably 14.2-16.5 m, and a casting speed of 3.8-7 m/minute. An INDEPENDENT CLAIM is also included for a plant for carrying out the above method, comprising a casting die, a strand guiding device downstream to the casting die, exhibiting a series of lower guide elements and a series of upper guide elements that are parallel to the lower guide elements or arranged in a convergent manner, where a receiving channel provided for receiving the strand discharged from the casting die, is formed between the two guide elements series, which is tapered at least sectionally in the transport direction of the strand, by forming guide elements that are opposite to each other at different distances and thus its the strand thickness is reducible, and the receiving channel at its end referring the pre-rolling mill exhibits a receptive width corresponding to the strand thickness, of 60-95 mm, preferably 70-85 mm, a pre-rolling mill downstream to the strand guiding device, an inductive heating device downstream to the pre-rolling mill, a finishing rolling mill downstream to the inductive heating device, and a control device for adjusting the casting speed of the strand to 3.8-7 m/minute, where a support strand length measured between the meniscus, which is the bath level of the casting die and the end of the receiving channel of the strand guiding device facing the pre-rolling mill, is 12-16.5 m.</p> |
