951451 - Miller Millermatic 350P Aluminum MIG Welder with XR-A Aluma-Pro Gun

Industrial Aluminum MIG Welding System

The Miller Millermatic 350P Aluminum Package (951451) represents a specialized configuration of the renowned 350P platform, explicitly tailored for high-performance aluminum fabrication. This system integrates the industrial power of the Millermatic 350P inverter-based power source with the precision feeding capabilities of the XR-A Aluma-Pro push-pull gun. Designed for manufacturing environments where aluminum welding quality and efficiency are paramount, this package eliminates the common frustrations associated with feeding soft aluminum wire through standard MIG torches.

Advanced Pulsed MIG Technology

At the core of this system is Miller's advanced Pulsed MIG capabilities. The machine comes pre-programmed with pulse schedules optimized for 4000 and 5000 series aluminum wires in 0.035 and 3/64 inch diameters. The Aluminum Pulse Hot Start feature automatically provides more arc power at the initiation of the weld, effectively eliminating the "cold start" defect common in aluminum welding where the base material acts as a heat sink. Furthermore, the system features SharpArc technology, allowing operators to fine-tune the arc cone width and fluidity to match joint configurations—flattening the bead profile or focusing the arc for deeper penetration as needed.

Superior Wire Feeding

The inclusion of the XR-A Aluma-Pro 15-foot push-pull gun is a critical component of this package. Unlike standard push-only systems that struggle with soft aluminum wire, the push-pull design utilizes a motor in the gun that works in perfect synchronization with the motor in the power source. This ensures constant tension and consistent wire delivery, virtually eliminating birdnesting and erratic feeding. The gun itself is air-cooled and designed for durability in industrial settings, featuring a rotatable neck for better access to tight joints.

Synergic Control and Efficiency

The Millermatic 350P offers Synergic MIG control, simplifying setup by allowing the operator to adjust wire feed speed while the machine automatically adjusts voltage to maintain the optimal arc. This reduces training time and setup errors. The unit operates on single or three-phase power (200/230/460 V), making it versatile for various facility power grids. With a rated output of 300 amps at 60% duty cycle, it provides the thermal stamina required for long weld runs on thick plate aluminum.