Argon arc welded tungsten electrodes are ideal for welding nickel-based alloys. Nickel-based alloys usually have high strength, high corrosion resistance, and good high-temperature resistance, and are widely used in aerospace, chemical, power generation, and other fields, with high requirements for welding quality.
The advantages of using argon arc welding tungsten electrodes for welding nickel-based alloys include:
Arc Stabilization
Tungsten electrodes provide a stable and concentrated arc heat source, which facilitates the formation of uniform welds with few defects.
High Melting Point and Ablation Resistance
The high melting point of tungsten electrode (about 3410°C) ensures that it is not easy to melt under high-temperature arcs, making it suitable for long-term welding of superalloy materials.
Good Arcing Performance
Choosing the right tungsten electrode type, such as thorium tungsten or cerium tungsten, can ensure good arc initiation performance and arc stability, reducing welding defects.
Protective Gas
Generally, high-purity argon gas is used to protect against oxidation in the welding area and ensure the quality of the weld.
However, when welding nickel-based alloys, it is necessary to reasonably select the diameter, current and sharpening angle of the tungsten electrode to avoid cracks or deformation caused by excessive heat input. At the same time, the optimization of process parameters and preheating measures also help to achieve better welding results.
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