| 摘要 |
<p>The invention relates to a method for producing a hot strip, in particular for producing a hot strip intended for the production of a cold strip with good deep-drawing characteristics; in which a steel melt comprising (in % by weight) C:<=0.07%, Si:<=0.5%, Mn:<=2.5%, Al:<=0.1%, N:<=0.01%, P:<=0.025, B:<=0.05, if need be up to a total of 0.35% of Nb, Ti and V, with the remainder being iron and the usual impurities is melted; in which the steel melt is continually output in one strand (S) from a permanent casting mould (1); in which the cast strand (S) immediately after discharge from the permanent casting mould (1) is led along a cooling line (2); in which the strand (S) is intensively cooled down to a temperature of Ar1±25 K at a cooling rate (aLM) of at least 3 K/s; in which, following its intensive cooling, the strand (S) is cooled by exposure to air for at least 30 seconds; and in which the strand (S) itself or thin slabs (D) divided off the strand (S) is/are reheated in a soaking furnace (5) before the strand (S) or the thin slabs (D) are hot rolled to form hot strip. The method according to the invention makes it possible, during processing of low-alloyed low-carbon steels, to reduce the required temperature in the soaking furnace such that the stress on the furnace is reduced without there being any reduction in the quality of the hot strip produced, or of the cold strip made from said hot strip.</p> |
