NBM-350DP Double-Pulse MIG / MAG Welder

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NBM-350DP Double-Pulse MIG / MAG Welder

CO2 / MIG / MAG Welder

NBM-350DP double-pulse MIG / MAG welding machine with digital inverter control. Rated at 350 A, the double-pulse process superimposes a low-frequency thermal pulse on the metal-transfer pulse, which lowers average heat input further and produces the characteristic evenly rippled aluminium bead. Because heat input is controlled precisely, thin sheet resists burn-through and distortion is minimal. The arc stays stable with very low spatter, and the weld pool remains controllable in vertical and overhead positions, giving consistent all-position appearance. Synergic adjustment makes setup fast and lets proven parameter sets be stored and recalled. Protection against over-voltage, over-temperature and under-voltage is comprehensive. Applications Carbon steel, stainless steel, aluminium and aluminium alloys in thin and medium plate. Widely used in sheet-metal fabrication, automotive and rolling stock, kitchenware and appearance-critical fabrications where the bead is left visible.

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Key Features

Double-pulse control producing a regular rippled bead, ideal for visible aluminium welds
Precisely controllable heat input: thin sheet resists burn-through, minimal distortion
Stable arc with very low spatter and clean bead formation
Easier pool control in vertical and overhead positions, consistent all-position results
Supports both CO2 and mixed shielding gas schemes
Stable wire feeding, tolerant of long cable runs
Complete over-temperature, over-voltage and under-voltage protection
Synergic adjustment with parameter storage and recall

Typical Applications

Cosmetic parts and decorative welds
Thin aluminium sheet and non-ferrous metals
Kitchenware, furniture metal and display equipment
Batch products with strict appearance consistency

Selection & Setup Notes

A double-pulse machine sells bead appearance: low-frequency modulation produces the regular ripple, letting cosmetic parts skip grinding and brushing. If you do not need the ripple, the NBM-350D single-pulse is better value.

Standards & Further Reading

External reference: American Welding Society (AWS) — Welding procedure and qualification references published by the American Welding Society.

Frequently Asked Questions

Can the ripple spacing be adjusted?

Yes — low-frequency modulation frequency and amplitude change spacing and depth. Make an appearance sample first.

What should I watch when welding aluminium?

Use pure argon, aluminium drive rolls and a Teflon liner, clean oxide and oil thoroughly, and keep stick-out short.

Does double pulse increase heat input?

Mean heat input is similar to single pulse, but the peak/background alternation makes the pool solidify rhythmically, giving a clear ripple with controlled distortion.

NBM-350DP Double-Pulse MIG / MAG Welder