Cut-resistant tungsten wire does need annealing during the production process. Annealing is an important method in the metal heat treatment process. For tungsten wire, its purpose mainly includes the following aspects:
Reduce hardness and improve cutting processability: Annealing can reduce the hardness of tungsten wire, making it easier to perform subsequent processing and cutting.
Eliminate residual stress and stabilize size: In the production process of tungsten wire, due to the presence of various processing stresses, residual stress may be generated inside the tungsten wire. Annealing can effectively eliminate these residual stresses and make the size of the tungsten wire more stable.
Reduce deformation and crack tendency: Annealing can refine the grains of tungsten wire and adjust its structure, thereby reducing the possibility of deformation and cracking during subsequent processing and use.
Improve the flexibility and bending performance of tungsten wire: Through annealing, the flexibility and bending performance of tungsten wire can be significantly improved, which is particularly important for application scenarios that require frequent bending or complex stress.
Eliminate tissue defects: Annealing can also eliminate tissue defects that may occur in the production process of tungsten wire, such as pores, inclusions, etc., thereby improving the overall quality of tungsten wire.
During the annealing process, parameters such as heating temperature, holding time and cooling rate need to be strictly controlled to ensure the best annealing effect. At the same time, the process parameters of annealing will also vary depending on the grade, degree of deformation and subsequent processing requirements of the tungsten wire.
It is worth noting that although annealing has a significant effect on the performance of tungsten wire, it may also cause the performance of tungsten wire to decline in some aspects, such as tensile strength. Therefore, when formulating the annealing process, various factors need to be considered comprehensively to balance the various properties of tungsten wire.
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