The high-temperature resistance of tungsten electrodes is mainly reflected in their extremely high melting point and excellent thermal stability. Specifically:
The melting point is about 3410°C, which is one of the highest among all metals, allowing tungsten electrodes to withstand high-temperature arcing for a long time without melting in argon arc welding.
Under high temperature conditions, tungsten has good thermal conductivity and thermal expansion stability, which can effectively dissipate heat and reduce electrode ablation and deformation caused by local overheating.
Tungsten electrodes can also maintain stable mechanical strength and electrical properties in high-temperature environments, ensuring arc stability and weld quality during welding.
Therefore, the high-temperature resistance of tungsten electrodes makes them irreplaceable non-melting electrodes in argon arc welding, suitable for various high-temperature welding environments, especially in high currents and long-term welding operations.
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