What is the main purpose of stabilizing the arc in SMAW?

Stabilizing the arc in Shielded Metal Arc Welding (SMAW) is primarily aimed at controlling weld quality. A stable arc results in consistent heat input and optimal fusion of the base metal and filler material. This stability helps produce a uniform bead and ensures that the penetration is adequate while minimizing defects such as porosity and undercutting.

When the arc is stabilized, the welder has better control over the welding process, allowing for adjustments in position and speed without affecting the quality of the weld. Enhancing the quality of the weld is crucial for the structural integrity and longevity of the welded joint, hence making control over weld quality the main purpose of stabilizing the arc.

While minimizing noise, enhancing power supply, or reducing material costs might be considerations during the welding process, they do not directly relate to the primary objective of maintaining a stable arc.