Resistance annealing furnace for annealing at least one metal or metal alloy wire, strand, string, wire rod or strip

摘要

For conveying metal or metal alloy wires (2), strands, strings, wire rods or strips in a resistance annealing furnace for annealing at least one metal or metal alloy wire, strand, string, wire rod or strip And at least two electrical axes (5-7) with respective electrical contact rings (8-10) and metal or metal alloy wires (2) extending between the two electrical axes (5-7) ), Between the two electrical axes (5 to 7) in order to generate an electrical current in the strands (16, 17) of the strands, strings, wire rods or strips, thereby inducing annealing due to the Joule effect An AC voltage (Uac) can be supplied to generate an applied annealing voltage (Uann) Annealing furnace having a DC voltage generator (14), a (1). At least one of the electrical contact rings (8-10) is made of a non-metallic conductive material, such as graphite.