METHOD FOR PRODUCING IMPROVED COLD ROLLED STRIP THAT IS CAPABLE OF BEING DEEP DRAWN OR IRONED, AND COLD ROLLED STRIP, PREFERABLY USED FOR PRODUCING CYLINDRICAL CONTAINERS AND, IN PARTICULAR, BATTERY CONTAINERS

摘要

The invention relates to a method for producing improved cold-rolled band that is capable of being deep-drawn or ironed and that has a carbon content of less than 0.5 weight %. The invention also relates to a cold-rolled band that can be produced by such a method, and preferably used for producing cylindrical containers and, in particular, battery containers by deep-drawing or ironing. The band that is cold-rolled with a cold-rolling ratio ranging from 30 to 95% is subjected to a thermal treatment in an annealing furnace and to a-preferably galvanic-coating of at least one of the two band surfaces. In order to obtain an isotropic steel band that has a low level of texturing and that has a low tendency to form earing, the coating produced with one or multiple layers contains the elements of nickel/cobalt/iron/bismuth/indium/palladium/gold/tin, or alloys thereof, where the thermal treatment is effected by annealing, which is carried out-before or after the coating process-in a continuously running band-annealing furnace at a temperature greater than the limit temperature of the austenite range (gamma range).