VORRICHTUNG UND VERFAHREN ZUM KONTINUIERLICHEN GLÜHEN VON METALLBÄNDERN

An arrangement and method for annealing a strip (1) with direct resistance heating comprising at least two rotable supported rollers (2,7; 8,9;12,13;17,18,19), where at least one of said rollers (2;8,9;12,13;17,18) is having a plurality of electrically conductive segments (5) at the circumference of the said roller (2;8,9;12,13;17,18), which segments (5) are insulated from each other and where the electric current is conducted simultaneously to only a part of said electrically conductive segments (5) by at least one sliding contact (3,4;10,11;14,15,16) so that the electric contact to the segment (5) is made after the mechanical contact of the strip (1) and the electrical contact being disconnected from the segment (5) before the mechanical contact is disconnected, thus avoiding sparking. Additionally, energy is recovered by directing the strip back to contact twice the same roller.