Why do doped tungsten wires are annealed more often during the production pro...

The processing method of doped tungsten wire is not much different from pure tungsten wire, except that doped tungsten wire must be annealed frequently during the production process. This is because the cold work hardening speed of doped tungsten wire is faster than that of pure tungsten wire. The annealing temperature is generally higher to ensure that it is fully recrystallized, and the resulting continuous crystal structure will prevent cracking during subsequent processing.