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iTIG250ACDC – Aluminium TIG Welding Machine, 250 A Pulse with MMA iTIG250ACDC aluminium TIG welding machine - with tig torch and earth clamp iTIG250ACDC aluminium TIG welding machine - front left angle iTIG250ACDC – Aluminium TIG Welding Machine, 250 A Pulse with MMA iTIG250ACDC – Aluminium TIG Welding Machine, 250 A Pulse with MMA mqdefault

iTIG250ACDC – Aluminium TIG Welding Machine, 250 A Pulse with MMA

iTIG250ACDC
iTIG250ACDC · 6-in-1 · Pulse

Aluminium TIG welding machine with AC, DC and pulse

The CRUXWELD iTIG250ACDC welds aluminium on AC, and stainless steel, mild steel and copper on DC, with pulse for thin sheet and an MMA stick mode, all from one portable single-phase inverter.

5–250 ATIG current
AC / DCAluminium and steels
0.2–500 HzPulse frequency
10–250 AMMA current
AC TIG for aluminiumDC TIGAC & DC pulseSpot TIGHF arc startMMA stickSingle phase

GeM Registered OEM Manufacturer · Supported Worldwide · 45+ years of welding expertise

Get a Quote → WhatsApp +91 88008 82983

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Overview

iTIG250ACDC aluminium TIG welding machine, 250 A multiprocess with AC TIG, AC pulse, spot TIG, DC TIG, DC pulse and MMA
Overview

What is the iTIG250ACDC aluminium TIG welding machine?

Aluminium needs AC. Steel and stainless need DC. The iTIG250ACDC gives you both, with pulse, in one machine.

Aluminium is covered by a tough oxide layer that melts at a much higher temperature than the metal underneath. An aluminium TIG welding machine uses AC current: one half of each cycle breaks the oxide, the other half drives heat into the joint. Switch to DC and the same inverter welds stainless steel, mild steel and copper with a steady, focused arc.

The CRUXWELD iTIG250ACDC adds HF arc starting, AC and DC pulse for thin sheet, spot TIG for tacks and a full MMA stick mode, from 5 to 250 A on a single-phase supply.

CRUXWELD iTIG250ACDC aluminium TIG welding machine, front view with control panel
  • Welds aluminiumAC output breaks the oxide layer so aluminium flows cleanly.
  • Six processesAC TIG, AC pulse, spot TIG, DC TIG, DC pulse and MMA.
  • Thin to thickFrom 0.5 mm sheet; 6 mm is the ideal working thickness.
  • Single phaseRuns from a single-phase supply in any workshop.
Six welding processes of the iTIG250ACDC: AC HF TIG, AC pulsed TIG, spot TIG, DC HF TIG, DC pulsed TIG and stick MMA
6 in 1

Six processes in one aluminium TIG welding machine

  • ACAC HF TIGAluminium and its alloys, with HF start and no touch to the tungsten.
  • ACAC pulsed TIGThin aluminium with less heat and less distortion.
  • SPOTSpot TIGTimed tack welds, 0.5–10 s, for repeatable spots.
  • DCDC HF TIGStainless steel, mild steel and copper with a stable arc.
  • DCDC pulsed TIGThin stainless sheet and tube with tight heat control.
  • MMAStick (MMA)Electrode welding 10–250 A with adjustable arc force.
Waveform lab

AC, DC or pulse: which one for your job?

The output waveform decides what you can weld. This aluminium TIG welding machine gives you all three.

ACAluminium and its alloysThe electrode-positive half cleans the oxide; the electrode-negative half gives penetration. AC width sets the balance between the two.
DCStainless, mild steel, copperSteady electrode-negative current for a narrow, deep and stable arc on steels and copper.
PULSEThin sheet and tubeCurrent switches between welding and pulse current up to 500 times a second, so thin metal fuses without burning through or warping.
Materials

Precision across metals

On this aluminium TIG welding machine, use AC for aluminium and DC for everything else.

TIG weld beads on aluminium, mild steel and stainless steel made with the iTIG250ACDC
iTIG250ACDC aluminium TIG welding machine suited for aluminium, steel, low-carbon steel and copper
Aluminium · ACAluminium alloys · ACStainless steel · DCMild and low-carbon steel · DCCopper · DCBrass and titanium · DC
Thickness

How thick can this aluminium TIG welding machine weld?

From 0.5 mm sheet, with 6 mm as the ideal working thickness for single-pass TIG welds. Thicker sections are welded in multiple passes.

TIG welding thickness: minimum 0.5 mm, ideal 6 mm, with the iTIG250ACDC

0.5 mm min6 mm ideal

02468 mm
0.5–2 mm sheetUse pulse and low current to avoid burn-through and warping.
2–6 mm plateSteady AC or DC current with filler rod for full fusion.
Above 6 mmBevel the edges and weld in multiple passes.
Control panel

Every control on the aluminium TIG welding machine, explained

Point at a number on the panel to see what it does. On a phone, tap the number.

iTIG250ACDC control panel: display, AC frequency, AC width, welding current, pulse width, pulse frequency, process switches, initial current, up slope, pulse current, down slope, crater current and post-flow1Digital displayShows the set welding current in amps.2AC frequencySets how fast AC switches. Higher frequency gives a narrower, more focused arc on aluminium.3AC widthBalances cleaning against penetration on aluminium.4Welding currentMain TIG or MMA current.5Pulse widthShare of each pulse spent at welding current.6Pulse frequencyHow many pulses per second, 0.2–500 Hz.7Pulse switchTurns pulse on or off.8Power and warning lampsPower on; warning lights if the machine needs to cool.9TIG / MMA and AC / DC switchesChoose the process and the output for aluminium (AC) or steels (DC).10Initial currentStarting current before the weld ramps up.11Up slopeTime to ramp from initial to welding current.12Pulse currentLower current between pulses.13Down slopeTime to ramp down at the end of the weld.14Crater currentFills the crater so the weld ends without a hole.15Post-flowArgon keeps flowing to protect the hot tungsten and weld.
Top row: current, AC and pulse
  1. 1
    Digital displayShows the set welding current in amps.
  2. 2
    AC frequencySets how fast AC switches. Higher frequency gives a narrower, more focused arc on aluminium.
  3. 3
    AC widthBalances cleaning against penetration on aluminium.
  4. 4
    Welding currentMain TIG or MMA current.
  5. 5
    Pulse widthShare of each pulse spent at welding current.
  6. 6
    Pulse frequencyHow many pulses per second, 0.2–500 Hz.
  7. 7
    Pulse switchTurns pulse on or off.
  8. 8
    Power and warning lampsPower on; warning lights if the machine needs to cool.
Bottom row: process and weld cycle
  1. 9
    TIG / MMA and AC / DC switchesChoose the process and the output for aluminium (AC) or steels (DC).
  2. 10
    Initial currentStarting current before the weld ramps up.
  3. 11
    Up slopeTime to ramp from initial to welding current.
  4. 12
    Pulse currentLower current between pulses.
  5. 13
    Down slopeTime to ramp down at the end of the weld.
  6. 14
    Crater currentFills the crater so the weld ends without a hole.
  7. 15
    Post-flowArgon keeps flowing to protect the hot tungsten and weld.
Weld cycle

Control every second of the weld on the aluminium TIG welding machine

Up slope, crater current and post-flow give a soft start, a clean finish without a crater, and a tungsten that stays shiny.

Currentargon keeps flowingInitial currentUp slopeWelding / pulse currentDown slopeCrater currentPost-flow (gas)
Front connections of the iTIG250ACDC: torch terminal, gas output, torch switch socket and work terminal1Torch terminal (−)TIG torch power connection.2Gas outputArgon to the TIG torch.3Torch switch socketTrigger cable of the TIG torch.4Work terminal (+)Earth clamp cable.
Front connections

Torch, gas and earth at the front

All welding connections sit at the front of this aluminium TIG welding machine, so setting up takes a minute.

  1. 1
    Torch terminal (−)TIG torch power connection.
  2. 2
    Gas outputArgon to the TIG torch.
  3. 3
    Torch switch socketTrigger cable of the TIG torch.
  4. 4
    Work terminal (+)Earth clamp cable.
Play video
Watch

TIG welding aluminium pipe

See AC TIG on aluminium tube: a clean, even bead with no oxide inclusions, the kind of finish the iTIG250ACDC is built for.

Applications

Where an aluminium TIG welding machine earns its keep

Aluminium tube joint TIG welded with the iTIG250ACDC
Aluminium tube frames
Aluminium plate seam TIG welded with the iTIG250ACDC
Aluminium plate seams
Welder TIG welding square steel tube with the iTIG250ACDC in a workshop
Steel tube in the workshop
  • Aluminium fabricationFrames, railings, ladders, boxes and boat fittings in aluminium.
  • Stainless steel kitchens and dairyFood-grade tanks, sinks and tables with neat, clean welds.
  • Pipe and tubeRoot and cap passes on thin-wall tube and pipe.
  • Automotive and two-wheelerAluminium radiators, tanks, silencers and frames.
  • Copper and brass jobsElectrical and HVAC work on DC TIG.
  • Maintenance and repairSwitch to MMA for structural repairs with the same machine.
Rear panel of the iTIG250ACDC with main switch, power input, earth terminal and cooling fan1Main switchON/OFF breaker with circuit protection.2Power inputSingle-phase supply connection.3Earth terminalConnect the machine body to earth.4Cooling fanPulls air through the cabinet to keep the inverter cool.
Rear panel

Single-phase input and fan cooling

The rear of the aluminium TIG welding machine carries the main switch, the single-phase power input, the earth terminal and the cooling fan.

  1. 1
    Main switchON/OFF breaker with circuit protection.
  2. 2
    Power inputSingle-phase supply connection.
  3. 3
    Earth terminalConnect the machine body to earth.
  4. 4
    Cooling fanPulls air through the cabinet to keep the inverter cool.
Why Cruxweld

Why buy your aluminium TIG welding machine from Cruxweld

  • GeM Registered OEM ManufacturerBuy direct from the brand on GeM or on a regular purchase order.
  • 45+ years of welding expertiseMachines set up by people who weld aluminium and steel every day.
  • Supported WorldwideOur technical team helps with settings on WhatsApp and video call.
  • Right machine, first timeTell us the metal and thickness and we recommend the right TIG welder.

Get the iTIG250ACDC price

WhatsApp the metal, thickness and joint. Our team replies with recommended settings and a quotation.

📞 +91 88008 82983

Specifications

Technical data

iTIG250ACDC aluminium TIG welding machine specifications

SpecificationiTIG250ACDC
General
ModeliTIG250ACDC
Input voltageAC 220 V ±10%, 1-Ph, 50/60 Hz
Rated input peak current30 A
Power capacity6.5 kVA
Output
Output current range (TIG)5–250 A
Output current range (MMA)10–250 A
Arc force current range0–50 A
Spot welding time0.5–10 s
No-load voltage with VRD9 V
No-load voltage without VRD56 V
Duty cycle60%
TIG functions
Pre-flow time0.1–10 s
Up-slope time0–10 s
Down-slope time0–15 s
Post-flow time0.5–15 s
Pulse frequency0.2–500 Hz
Pulse width1–99%
Remote controlYes
Arc startHF start
Build
Efficiency85%
Power factor0.93
Insulation gradeH
Enclosure protection classIP23
Dimensions590 × 345 × 485 mm
Weight32 kg

Key features

  • AC / DC TIGAluminium on AC, steels and copper on DC.
  • AC and DC pulse0.2–500 Hz for thin sheet.
  • HF arc startNo tungsten contamination at the start.
  • Spot TIGTimed tacks, 0.5–10 s.
  • Weld-cycle controlUp slope, down slope, crater current, post-flow.
  • MMA with arc force10–250 A stick welding.
  • VRDLow no-load voltage for safer MMA.
  • Remote control readyFor a foot pedal or torch remote.

Accessories

In the box

Supplied with the aluminium TIG welding machine

  • 1iTIG250ACDC inverter welding machine
  • 2TIG torch, complete set
  • 3Earth clamp with cable
  • 4Input power lead
  • 5Argon regulator with flow meter
iTIG250ACDC with TIG torch and earth clamp supplied as standard

Need tungsten electrodes, ceramic cups, filler rods or a foot pedal? Ask our team on WhatsApp.

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Question & Answers

FAQ

Aluminium TIG welding machine: questions buyers ask

Can the iTIG250ACDC weld aluminium?
Yes. Select AC TIG: the AC output breaks the aluminium oxide layer and gives a clean, sound weld. Use AC pulse for thin aluminium sheet.
What is the difference between AC and DC TIG?
AC is used for aluminium and its alloys because it cleans the oxide layer. DC is used for stainless steel, mild steel, copper, brass and titanium.
What is the thinnest metal this aluminium TIG welding machine can weld?
Down to 0.5 mm sheet with pulse and low current. The ideal working thickness is about 6 mm; thicker sections are welded in multiple passes.
What power supply does it need?
A single-phase AC 220 V ±10%, 50/60 Hz supply with a power capacity of 6.5 kVA.
What does pulse do?
Pulse switches the current between welding current and a lower pulse current, 0.2–500 times a second. This controls heat on thin sheet and tube and reduces distortion.
Can I use this aluminium TIG welding machine for stick welding?
Yes. Switch to MMA for stick welding from 10 to 250 A, with adjustable arc force and VRD.
Which gas do I need for TIG welding aluminium?
Pure argon. The machine is supplied with an argon regulator and flow meter.
How do I get the price and delivery time?
WhatsApp +91 88008 82983 with your material, thickness and city. Our team sends a GST quotation with the delivery time.

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21 Comments

  1. Reply

  2. Please I am in Nigeria and I am new into stainless rails and I need the TIG 200 but will also need to know more about it. I sell the pipes and also want to go into the welding both argon and arc welding

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  10. I want a quotation for TIG-200ACDC
    Will be using for Aluminum its alloy and steel

    Reply
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iTIG250ACDC – Aluminium TIG Welding Machine, 250 A Pulse with MMA

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