How is the work angle defined in welding?

The work angle in welding is defined as the angle between the electrode and the base metal when viewed from the end plane. This definition is important because it describes how the electrode positions itself relative to the workpiece, which can significantly influence the quality of the weld.

Understanding the work angle is crucial because it affects penetration, bead shape, and overall weld integrity. An optimal work angle allows for proper arc stability and ensures that the heat generated by the welding process is appropriately directed towards the joint, promoting effective fusion of the metals involved.

Other descriptions provided in the options focus on different aspects of the welding technique, such as the positioning of the electrode relative to the surface or the filler metal, which may influence other parameters but do not specifically capture the definition of the work angle itself. By focusing on the correct definition, welders can better control their processes and improve their skills.