What is indicated by a less fine point or taper on a tungsten electrode?

A less fine point or taper on a tungsten electrode signifies that it is suitable for thicker metals or high-current usage. The geometric shape of the electrode affects how the arc is stabilized and how much heat is delivered to the workpiece. A broader point can manage greater current levels, which is necessary for welding thicker materials, as it allows for a more substantial arc and greater heat input.

When welding thick sections, the need for higher currents is critical to ensure an adequate molten pool, and a less sharp point helps in maintaining a more stable arc at those higher settings. This capability decreases the likelihood of electrode melting or deformation, which can occur when using a finer point in high-current applications. Therefore, using a tungsten electrode with a less fine point maximizes efficiency and is essential for effective welding of thicker materials.