| 摘要 |
<p>The invention relates to a method for the operationally reliable production of a cold-rolled flat steel product = 0.5 mm thick for deep-drawing and ironing applications. According to said method, a steel melt, containing (in percent by weight) up to 0.008% C, up to 0.005% Al, up to 0.043% Si, 0.15-0.5% Mn, up to 0.02% P, up to 0.03% S, up to 0.020% N and optionally up to 0.03% Ti and optionally up to 0.03% Nb, and iron and unavoidable impurities as the remainder, is subjected, forgoing a Ca treatment, to a secondary metallurgical treatment, which comprises, in addition to a vacuum treatment, a crucible furnace treatment and during which the steel melt to be treated is kept under a slag, the Mn and Fe content of which is less than 15% by weight in total. From the steel melt, a thin slab or a cast strip is produced, which is then hot-rolled to form a hot-rolled strip having a thickness of < 2.5 mm and then wound to from a coil. Then the hot-rolled strips are cold-rolled to form a flat steel product up to 0.5 mm thick. The invention further relates to a correspondingly produced flat steel product and to uses of such a flat steel product.</p> |
