What is the preferred angle of the tungsten electrode in GTAW?

In Gas Tungsten Arc Welding (GTAW), the preferred angle of the tungsten electrode is typically 15 to 20 degrees from the vertical. This angling of the electrode helps achieve a more focused arc and enhances the control of the weld pool. By tilting the electrode slightly, the welder can direct the heat more effectively into the base material, which is crucial for achieving good penetration and minimizing defects.

This angle also allows for better visibility of the weld joint, enabling the welder to monitor the arc and the molten pool closely. Additionally, this positioning helps in preventing contamination of the tungsten by the molten metal, which can occur at steeper angles close to vertical or when the electrode is held at 90 degrees. Ensuring the right angle is essential for maintaining a stable arc and producing high-quality welds.