Hille & Mueller Gmbh

Hans-Güenter Steinmann

Ferdinand Schmidt

Karlfried Pfeifenbring

Werner Olberding

Dagmar Petrick

Marcel Sebastian Rubart

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&#x2014;preferably galvanic&#x2014;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&#x2014;before or after the coating process&#x2014;in a continuously running band-annealing furnace at a temperature greater than the limit temperature of the austenite range (&#x3b3; range).

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

The invention relates to a method for producing an electrolytically coated cold rolled strip, preferably for use in the production of battery sheaths. The cold rolled strip is provided with a cobalt or a cobalt alloy layer by an electrolytic method. The aim of the invention is to provide a battery sheath with low values for the electric contact resistance between the cathode substance of the battery and the inner surface of the battery sheath. To this end, organic substances m added to the electrolyte during coating that produce decomposition products, said decomposition produces and/or reaction products of said decomposition products with other components of the electrolytic bath being deposited on the strip material as a brittle layer along with the cobalt or the cobalt alloy.

Method for producing electrolytically coated cold rolled strip, preferably for use in the production of battery sheaths, and battery sheath produced according to this method

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Düesseldorf, Germany

Hans-Güenter Steinmann