This equipment typically uses a continuously fed wire electrode, automating the filler metal application process. A human operator still guides the welding torch, controlling the weld placement and travel speed. A common example is a MIG (Metal Inert Gas) welder, where the wire feeds automatically, but the operator manipulates the torch and workpiece positioning.
Such devices offer a balance between speed and control. The automated wire feed increases welding speed compared to fully manual methods, while the operator retains control over weld quality and can adapt to complex joint geometries. This balance has made these welders a mainstay in manufacturing, construction, and repair industries, offering higher productivity and greater versatility than manual counterparts, yet retaining the adaptability often lacking in fully automated systems. Their development represents a significant step in welding technology, bridging the gap between manual processes and fully robotic automation.