ESAB Origo Mig 4002cw, used MIG/MAG welder

ESAB Origo Mig 4002cw with an Aristo Feed 3004w feeder and an Aristo U6 digital panel is an industrial MIG/MAG welder on an electronically controlled rectifier, with an integrated liquid cooler. The source gives 400 A at 34 V and a 60% duty cycle and 310 A at 29.5 V in continuous 100% work. Supply is 3 x 400 V to 415 V, and the housing has protection class IP23 and application class S.

What this machine is for

This is a set for production welding shops that work at a high load. At 310 A in a continuous 100% cycle you lay long welds on sections and frames without stops, and the setting range covers MIG/MAG from 20 A at 15 V to 400 A at 34 V and MMA stick welding from 20 A at 20.8 V to 400 A at 36 V. In MMA the machine holds 400 A at 36 V and a 60% duty cycle and 310 A at 32.4 V without breaks, so you do repairs and assembly of heavy structures with the same source, without gas accessories.

The Aristo U6 panel handles MIG/MAG Pulse welding, synergic lines, a non synergic mode and the self learning QSet short arc. The pulse detaches the droplet with a current pulse without micro short circuits, so metal transfer is of a spray type at a lower average current: on stainless steel the bead comes out clean, and on aluminium you control the heat more easily. QSet works differently, because it watches the short arc: it compensates changes in the free wire stickout itself, so you set the feed speed and the circuit matches the voltage and the striking dynamics. On root runs and on braze welding of galvanised sheet with CuSi filler that shortens the setting up, but it rules out ordinary synergy.

The reach comes from a liquid cooled interconnection cable about 10 m long, a water cooled torch of about 4 m and an extended earth cable of about 5 m, with which you earth a large part more easily. The heavy source of about 163 kg stands in one place, and you walk with the feeder along a semi trailer or a machine frame. Voltage drops over such a long route are compensated by the TrueArcVoltage measuring circuit, which holds the set voltage at the arc itself and not at the sockets of the source.

Features and equipment

• MIG/MAG Pulse welding: the droplet detaches with a current pulse without short circuits, so on stainless steel and aluminium there is no spatter, and in forced positions you control the pool more easily.
• QSet, a self learning short arc: the circuit compensates changes in the free wire stickout and matches the voltage and the striking dynamics to the set feed speed, which helps on root runs and on braze welding of CuSi sheet.
• Synergic lines of the Aristo U6 panel: after you point to the wire material, the gas and the filler diameter, the circuit sets the ratio of voltage to feed.
• Non synergic mode: you run the current, the voltage and the inductance separately with an unusual gas mixture.
• TrueArcVoltage compensation of voltage drops: a separate measuring path senses the losses on the interconnection package of 10 m and on the earth cable of 5 m, so the real arc voltage matches the setting.
• Aristo Feed 3004w feeder with four drive rolls, liquid cooled: a rating of 630 A at a 60% duty cycle and 500 A at 100%, the pressure spread evenly, so cored wires and aluminium do not deform in a torch of 4 m.
• Wire feed speed from 0.8 m/min to 25 m/min: from thin sheet to thick filling passes.
• A compartment for spools up to 300 mm, optionally 440 mm: longer runs without breaks.
• Creep Start and Hot Start starting functions up to about 10 s: the wire comes out more slowly until the strike and does not bounce off a cold part, and raised parameters at the start remove lack of fusion.
• Crater Fill up to about 5 s and Burn-back adjustment: the end of the bead fades out without crater cracks and porosity.
• Ten memory cells for WPS programs: you recall the settings for a repeated part in one move.
• Modes 2T and 4T and spot welding with a time setting: 4T brings together the start and crater parameters.
• Built in liquid cooling circuit of about 1 kW and up, with a working pressure up to 3.5 bar: it takes the heat away from the torch at currents from 300 A to 400 A.

Technical data

What you get

• ESAB Origo Mig 4002cw source with an integrated liquid cooler
• Aristo Feed 3004w four roll wire feeder, liquid cooled
• Aristo U6 digital panel
• liquid cooled interconnection cable about 10 m long
• water cooled MIG/MAG torch about 4 m long
• earth cable about 5 m with a jaw clamp

What to watch out for

The set needs a 3 x 400 V to 415 V mains, and the input current reaches 32 A at the peak and 25 A effective, so size the circuit and the fuse for those values. The cooling circuit has a power from about 1 kW and a working pressure up to 3.5 bar, so check the level and the cleanliness of the fluid before the first shift, because a water cooled torch rated for currents from 300 A to 400 A will not stand even a short run without circulation. Plan the duty cycle by the documentation: you get 400 A at 60%, and without breaks the source gives 310 A.

The source with the cooler weighs about 163 kg and measures about 830 x 640 x 835 mm, so prepare a pallet truck for unloading. The set is split into a source and a feeder, so plan room at the station for both items and for the gas cylinder, and once it is in place check the tightness of the coolant couplings in the interconnection package of about 10 m. QSet rules out ordinary synergy, you pick one or the other. Aluminium calls for confirming the activation, U type rolls and a PTFE liner, and the catalogue diameters are from about 1.0 mm to 1.6 mm.

How we sell used machines

This unit was checked in our service workshop in Krotoszyn with measurements to PN-EN 60974-4 and a load test. The price includes the first year of the basic service package: an inspection with cleaning of the machine and a validation measurement. Further years can be added. We ship across the European Union, collection in person by appointment.