What is the recommended wire feed speed for 20 gage steel using .035 short circuit?

For welding 20-gauge steel using .035-inch wire in a short-circuit MIG welding process, a wire feed speed in the range of 105-115 inches per minute is typically recommended. This speed allows for an optimal balance between penetration, bead shape, and arc stability.

In short-circuit MIG welding, the wire must feed in a controlled manner to achieve a consistent and stable arc, which is crucial for preventing defects like porosity or burn-through, especially with thinner materials such as 20-gauge steel. The specified range of 105-115 inches per minute provides enough wire for the process without overwhelming the melt pool, ensuring that the weld site stays manageable and that the heat input is appropriate for the material thickness.

Adjusting the wire feed speed outside of this optimal range can lead to poor weld quality. Speeds that are too slow may result in insufficient melting, causing weak joints, while speeds that are too fast could lead to excessive melting and burn-through. Thus, maintaining this recommended range is key for achieving quality welds in this specific application.