Enkele referenties hieronder. Ik vermoed dat het gaat om het uitgloeien van het draad i.v.m. draadfabricageprocessen. Uit de tweede ref. blijkt dat de gloeiovens hiervoor in het Duits 'Drahtdurchziehöfen'worden genoemd. Misschien heb je hier iets aan.

http://en.wikipedia.org/wiki/Annealing_(metallurgy)
Process annealing
Process annealing, also called "intermediate annealing", "subcritical annealing", or "in-process annealing", is a heat treatment cycle that restores some of the ductility to a work piece allowing it be worked further without breaking. Ductility is important in shaping and creating a more refined piece of work through processes such as rolling, drawing, forging, spinning, extruding and heading. The piece is heated to a temperature typically below the austenizing temperature, and held there long enough to relieve stresses in the metal. The piece is finally cooled slowly to room temperature. It is then ready again for additional cold working. This can also be used to ensure there is reduced risk of distortion of the work piece during machining, welding, or further heat treatment cycles.


http://www.nabertherm.com/produkte/details/en/waermebehandlu...
Continuous Belt Furnaces and Strand Annealing Furnaces
D 20/S - D 320/S
These models are particularly suitable for continuous heat treatment at operation temperatures up to 1200 °C. The modular design allows adjustment to different length and width requirements. The heating elements are mounted on only one side of the furnace and can be changed individually during operation. Optimum temperature uniformity is achieved by means of a multiple zone control system tailored to the furnace dimensions.