The lead angle should be set at what degree when traveling forward?

The lead angle, when set for traveling forward in Shielded Metal Arc Welding (SMAW), is ideally positioned between 5 to 15 degrees. This angle is pivotal for achieving optimal weld quality, as it ensures adequate penetration and a good arc stability. A proper lead angle allows the welder to more effectively control the molten weld pool and results in a more uniform bead.

Setting the lead angle too low may not provide sufficient control over the welding puddle, leading to potential defects such as incomplete fusion. Conversely, setting it too high can increase the chances of porosity or undercutting. Thus, the range of 5 to 15 degrees strikes a balance that promotes a successful weld by maintaining both visibility and control over the welding process while effectively mitigating the risk of common welding issues.