For the first class cold heading property of our wires, the type of annealing treatment is of major importance. In addition to a double-vacuum hood-type annealing furnace which can be operated with nitrogen, a state of the art oxygen-operated hood-type annealing furnace, brand Ebner HICON / H2, was purchased in 1999. The temperature/time runs are continuously measured, controlled and documented during the annealing process.
Heat-treated wire rods
| + U + C | = | K - cold drawn |
| + U + C + AC | = | KG - cold drawn, finally annealed |
| + AC + C | = | GK - annealed, cold drawn |
| + U + C + AL + LC | = | KGK - cold drawn, annealed, finally drawn |
