Smootharc i-series RangeIntroducing the Smootharc Elite i-series range of MIG machines. A range of robust, inverter-based power sources for MIG/MAG standard, MMA and TIG (Liftarc) welding plus arc air gouging.

3 year conditional warranty Basic inverter range MIG/MAG machines with stepless control of voltage and wire feed speed. Ideal for medium to heavy duty applications.

SuperPulsThe EWM superPuls function makes it possible to switch manually or automatically during welding between multiple processes.

rootArcWith easy weld modelling capabilities for trouble-free gap-bridging and positional welding.

forceArcHeat-reduced, directionally stable, powerful arcs with deep fusion penetration for the upper power range. Unalloyed and low-alloy steels and high-tensile fine-grained steels.

Highlights

Multi-functional power sourceThe robust, infinitely adjustable power source for MIG/MAG standard, MMA and TIG (Liftarc) welding plus arc air gouging.

Simple operating concepts, Basic or SynergicBasic: standard setting via wire speed and voltage on the welding machine or wire feed or

Synergic: simple setting only via wire speed. Material, wire and gas type are set via JOB list on the welding machine, the wire feed on the welding machine or wire feed unit.

Consistent welding resultsOur inverter technology ensures consistent results regardless of the intermediate hose package lengths, mains cable lengths or mains voltage fluctuations.

forceArc highly productive, impressive quality (Synergic version only)Up to 50% lower production costs; a masterpiece of innovative MIG/MAG process engineering. Powerful forced arc, deep fusion penetration and virtually spatter-free weld seams of the highest quality.

Easy to useThe operating point is infinitely adjustable via the panel control. This can also be adjusted at the workplace by remote control or torch controls (optional).

For information on torches please refer to the BOC MIG/TIG torch range brochures.

Smootharc Elite MIG 351 i-BASIC

Power sourceWire feed unit with Euro connectorInterconnecting kit 10 mMT400G EZA 3m M8Work return lead 70 mm 2 x 4 mBOC RegulatorOperating Manual

Part No. ELITE351I

Smootharc Elite MIG 451 i-SYNERGIC

Power sourceWire feed unit with Euro connectorInterconnecting kit 10 mMT400G EZA 3m M8Work return lead 70 mm 2 x 4 mBOC RegulatorOperating Manual

Part No. ELITE451iSYN

Smootharc Elite MIG 451 i-BASIC

Power sourceWire feed unit with Euro connectorInterconnecting kit 10 mMT400G EZA 3m M8Work return lead 70 mm 2 x 4 mBOC RegulatorOperating Manual

Part No. ELITE451I

Smootharc Elite MIG 551 i-BASIC

Power sourceWire feed unit with Euro connectorInterconnecting kit 10 mMT400G EZA 3m M8Work return lead 95 mm 2 x 4 mBOC RegulatorOperating Manual

Part No. ELITE551I

Basic Control

Basic Control

Synergic Control

Synergic Control

Synergic Control Basic Control

High

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Operating point, arc length correction and latched/non-latched operation can be set at the workplace (wire feed)

Operating point, arc length correction and latched/non-latched operation can be set at the workplace (wire feed)

Synergic one-dial operation Twin-dial operation

forceArc, rootArc and MIG/MAG welding with solid wire and cored wire, MMA and TIG Liftarc welding, gouging

MIG/MAG welding with solid wire and cored wire, MMA welding, gouging

Optimum pre-programmed JOBs (welding tasks) for different materials, gases and wire diameters

Wire

Fee

d

Setting the operating point and connection of the arc length, latched/non-latched

Setting the wire feed speed and welding voltage, latched/non-latched

No electronics in the wire feed No electronics in the wire speed

Pow

er S

ourc

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Setting the welding parameters via the welding process with LED user guidance Setting and displaying for the welding data

Display for the welding data

Job list for selecting the welding task Buttons for selecting the welding process

Acce

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Function torch U/D; 2 U/D Function torch 2 U/D

Remote control R10 Remote control R11

Proc

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MIG/MAG: rootArc, forceArc, superPuls, Standard short arc, Standard spray arc MIG/MAG: Standard short arc, Standard spray arc

MMA; TIG (Liftarc), Arc air gouging MMA; TIG (Liftarc), Arc air gouging

Smart control power sources and wire feedersBOC machines and processes provide the optimum solution for each application.

BOC and, German company, EWM Hightec Welding are partners that have worked together to offer a quality, flexible range of advanced machines that provide ideal solutions for even the toughest requirements.

BOC is a leader in the supply of industrial gases for just about every industry including welding. Our Welding Process Specialists have been offering technical advice to welding customers for many years.

As leaders in technology EWM has, for decades, been involved in research and development to help make welding even easier and cost-effective for customers. Their electro-technical skills have assisted in developing new and innovative welding processes such as coldArc, forceArc, rootArc, pipe solution and more. This technology is converted into the latest inverter and microprocessor machines from EWM.

Vollt

age

[V]

Current [A]

coldArc

pipeSolution

rootArc

forceArc

superPuls

pulse arc

Innovating welding processesBOC delivers innovative welding processes from EWM through the range of Smootharc i-series machines.

coldArc

Heat-reduced, low-spatter short arc for high dimensional stability welding and brazing of thin metal sheets and root welding with excellent gap-bridging capabilities.

forceArc

Heat-reduced, directionally stable, powerful arc with deep fusion penetration for the upper power range.

pipeSolution

Powerful short arc for rapid safe welding, with and without gaps, in all positions.

impuls

Controlled, short circuit-free pulse arc for all positions, preferred for the transitional arc area.

rootArc

Short arc with easy weld modelling capabilities for trouble-free gap-bridging and positional welding.

superPuls

The combination of EWM welding processes offers a multitude of possibilities.

rootArc

The new short arcWith easy weld modelling capabilities for trouble-free gap-bridging and positional welding.

Reduced spatter compared with the standard short arcGood root formation and secure flank captureExcellent heat-reduced welding in vertical-up position due to superPuls process switchingVertical-up seams with no weavingUnalloyed and low-alloy steelsManual and automated applications

Secure standard short arc weldingLower spatter compared with a standard short arcGood root formation and secure flank capture, also for vertical-up/vertical-down weldingIn combination with pulse arc, outstanding welding in vertical-up positions due to superPuls processing switchingVertical-up welding without weavingUnalloyed and low-alloy steelsManual and automated applications

forceArc (Patented)

Cost-effective welding processHeat-reduced, directionally stable, powerful arc with deep fusion penetration for the upper power range.

Smaller seam preparation angle due to deep fusion penetration and directionally stable arcFewer passesLess distortion due to heat-reduced, concentration arcExcellent root and flank capturePerfect welding woven with very long stick outsReduced undercutVirtually spatter freeParticularly beneficial eg for fillet welds, dynamically loaded components eg for load bearing parts for bridges, wagon and steel constructionUnalloyed, low-alloy and high-alloy steels and high-tensile fine grained steelsManual and automated applications

Smaller seam preparation angle, fewer passesHigh savings potentialMinimised welding seam preparationLower number of passesLess filler material and shielding gas consumptionShorter welding timeHot pass for submerged arc welding supportParticularly advantageous eg for very large panel thicknesses

Process highlightsFrom short arc with easy weld modelling capabilities or heat-reduced, directionally stable, powerful arcs with deep fusion penetration.

Elite 551 iStable, soft, short arc even with long welding leads. Ideal for simple, reliable root welding without pool support, easy gap bridging.

Inverter welding machine, DCChoice of two control systems: Basic (twin-knob operation) or synergic (one-knob operation)Basic: MIG/MAG, MMA, arc air gougingMobile, can be lifted by crane and moved by fork liftDecompact, gas-cooledConnection capability for remote control and function torch4-roller wire feed equipped for 1.0 mm + 1.2 mm steel wires5 m mains supply leadAvailable ex works in multi-voltage version (230 V, 400 V, 480 V)100% tested and free-welded

Specifications Elite 551 i

Mains voltage (tolerances) 3 x 400 V (-25% to +20%)Mains fuses (slow-blow) A 3 x 35Setting range for welding current A 5 to 550Duty cycle 40C 550 A/60%Duty cycle 40C 420 A/100%Dimensions L x W x H mm 1100 x 455 x 1000Weight kg 115Dimensions, wire feed unit L x W x H mm 690 x 300 x 410Weight, wire feed kg 13.5

Elite 351 iStable, soft, short arc even with long welding leads. Ideal for simple, reliable root welding without pool support, easy gap bridging.

Inverter welding machine, DCControl systems: Basic (twin knob operation)Basic: MIG/MAG, MMA, arc air gougingMobile, can be lifted by crane and moved by fork liftDecompact, gas-cooledConnection capability for remote control and function torch4-roller wire fee