What happens to the welding process when the travel angle exceeds 90 degrees?

When the travel angle exceeds 90 degrees, control over the weld is compromised due to several factors. An extreme travel angle can cause the welding arc to become unstable, making it harder for the welder to produce a consistent bead. The proper travel angle helps maintain a suitable distance between the welding gun and the workpiece, ensuring that the arc length is optimal for effective heat transfer and penetration.

As the angle increases beyond a vertical position, it can lead to difficulty in maintaining accuracy in the weld's placement. This lack of control may result in inconsistent penetration and bead shape, potentially leading to defects such as excessive spatter or undercutting. A proper travel angle is crucial for achieving the desired weld characteristics and ensuring the overall quality of the welding process.