Assembly, device and method for attaching a contact tube to a shaft of a continuous resistance annealer for wires

A method for attaching a contact tube to a shaft of a continuous resistance annealer for wires, a shaft-centered flange being attached to one end of this shaft, the flange comprising ring attachment structures for the shaft-centered attachment of a ring to this flange, wherein this ring comprises tube attachment structures for the ring-centered attachment of the contact tube to this ring and flange attachment structures for the shaft-centered attachment of the ring to this flange, comprising the following steps:

• a) attaching the contact tube to the ring in a ring-centered manner by means of tube attachment structures;
• and
• b) attaching the ring to the flange in a shaft-centered manner by means of the ring attachment structures and the flange attachment structures.

A device for heat treating of wire by electrically heating the wire, comprising:

• at least one contact tube that is attached to a shaft for transmitting an electrical current to the wire, with the contact tube having been attached, or being attachable to the shaft.

A ring for attaching a contact tube to a shaft of a continuous resistance annealer for wires, a shaft-centered flange being attached to one end of the shaft, wherein said ring comprises tube attachment structures for the ring-centered attachment of the contact tube to said ring and flange attachment structures for the shaft-centered attachment of the ring to the flange.