LOW STEEL BAND CONTAINED IN CALMED CARBON WITH ALUMINUM FOR PACKAGING.

摘要

Method of manufacturing a low carbon steel band soothed with aluminum for packaging, in which: - a hot rolled steel strip is supplied which includes, by weight, between 0.022 and 0.035% carbon, between 0, 15 and 0.25% of manganese, between 0.040 and 0.070% of aluminum, between 0.0035 and 0.0060% of nitrogen, the rest being iron and residual impurities unavoidable, - a first cold rolling of the strip is carried out, - the cold rolled strip is subjected to an annealing, - a secondary cold rolling is eventually carried out, characterized in that the annealing is a continuous annealing whose cycle includes: - an increase in temperature to a temperature higher than the initiation temperature of the Perlitic transformation Ac1, - a maintenance of the band above this temperature for a time exceeding 10 seconds, - a rapid cooling of the band to a temperature below 100ºC at a cooling rate greater than 100 ° C per second, - a low temperature heat treatment between 100 ° C and 300 ° C for a time greater than 10 seconds, - and cooling to room temperature.