| 摘要 |
<p>Annealing of the steel strip includes heating to exceed the steel eutectic temperature, maintaining the sheet above this temperature for more than 10 s, and rapid cooling to less than 350 degrees C at more than 100 degrees C/s. Production of a low carbon, reduced aluminum steel strip involves: (a) providing a hot-rolled steel strip containing (in wt %): 0.022-0.035 C, 0.15-0.25 Mn, 0.040-0.070 Al, 0.0035-0.0060 N, and the remainder Fe and inevitable impurities; (b) first cold rolling the strip; (c) annealing the cold rolled strip; and (d) secondary cold rolling. An Independent claim is included for the corresponding steel sheet for packaging, in which the ultimate tensile strength is related to the ultimate elongation by an equation provided.</p> |
