Final answer:
The travel angle in welding refers to the angle at which the electrode is pointing in the same direction as the welding bead progression. It affects the shape, penetration, and quality of the weld.
Step-by-step explanation:
Physics: Travel Angle in Welding
In welding, the travel angle refers to the angle at which the electrode is pointing in the same direction as the welding bead progression. It affects the shape, penetration, and quality of the weld.
A steep travel angle (small angle with the workpiece) leads to deep penetration, narrow bead, and less heat input. In contrast, a shallow travel angle (large angle with the workpiece) results in shallower penetration, wider bead, and more heat input.
For example, in a vertical-down welding position, a steep travel angle can help against gravity, while a shallow travel angle may lead to excessive heat input and poor bead shape.