One AC/DC TIG welding machine for aluminium, stainless and steel.
The TIG 315 AC/DC is a 415 V three-phase inverter pulse TIG welder with HF start and MMA. AC for aluminium, DC for stainless and carbon steel, 5 to 315 A, pulse from 0.5 to 500 Hz, and adjustable slope, crater and gas timing. Add an AquaWeld water cooler for long runs with a water-cooled torch.
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Pick a mode to see what the arc is doing.
ACAC TIG
AC breaks the oxide skin on aluminium on the electrode-positive half cycle and puts heat into the plate on the negative half. HF start lights the arc without touching the tungsten to the work.
ENAC balance
Shift the balance toward electrode negative for a narrower, deeper bead and longer tungsten life; toward positive for more cleaning on dirty or oxidised aluminium.
DCDC TIG
Steady electrode-negative output for deep, controlled penetration on ferrous and non-ferrous metals. Pulse DC keeps heat down on thin stainless so the sheet stays flat.
From the first puff of argon to the last second of post-flow, the TIG 315 AC/DC lets you shape the arc for the joint in front of you.
Pulse alternates between a peak current that melts and a base current that lets the pool cool. The result is less distortion on thin stainless and aluminium, a controlled pool out of position, and the stacked-dime bead TIG welders want.
Time your filler dab to each pulse. Good for thin sheet, out-of-position work and a visible ripple pattern.
The arc stiffens and narrows. Good for fine edges, corner joints and keeping heat out of the surrounding metal.
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12345Water output on the front panel. Connect an AquaWeld water cooler and a water-cooled torch for long seams at high current without stopping to let the torch cool.
An air-cooled torch heats up fast above 200 A. A water-cooled torch stays cool at full current, is lighter in the hand and uses a smaller torch head. The AquaWeld coolers plug into a 220 V socket, connect to the TIG 315 AC/DC with Ø8 mm quick couplers, and need no mains water line.
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Water-cooled torch and AquaWeld cooler are quoted as options. The exact scope of supply is confirmed on your quotation.
See all TIG welding machines, or read our guides on aluminium welding problems and TIG welding problems.
WhatsApp the material, thickness and hours per day. Our team replies with the right torch, cooler and a quotation.
| Specification | TIG 315 AC/DC |
|---|---|
| General | |
| Model | iTIG315ACDC |
| Processes | AC TIG, DC TIG, pulse TIG, MMA |
| Input voltage | AC 415 V ±15%, 3-phase, 50–60 Hz |
| Max input at 100% duty cycle | 9.8 kVA |
| Output | |
| Welding current range, TIG | 5–315 A |
| Welding current range, MMA | 10–300 A |
| Welding current at 60% duty cycle | 315 A |
| Pulse and sequence | |
| Pulse current | 5–315 A |
| Pulse width | 10–90% |
| Pulse frequency | 0.5–500 Hz |
| Gas pre-flow time | 0–5 s |
| Gas post-flow time | 0.1–20 s |
| Current up slope time | 0–10 s |
| Current down slope time | 0–10 s |
| Build | |
| Degree of protection | IP23S |
| Insulation | Class H |
| Cooling | Forced air; water output for water-cooled torch |
| Dimensions (L × W × H) | 556 × 325 × 350 mm |
| Weight (approx.) | 36 kg |
The exact scope of supply is confirmed on your quotation.
The TIG 315 AC/DC is a 415 V three-phase IGBT inverter TIG welding machine with AC output for aluminium and its alloys, DC output for carbon steel, stainless steel, copper and titanium, pulse on both, and MMA stick welding for site and repair work. It runs from 5 to 315 A in TIG and 10 to 300 A in MMA, starts the arc with HF so the tungsten never touches the work, and puts every stage of the weld cycle on a front-panel knob: pre-flow, start current, up slope, peak and base current, pulse frequency and width, down slope, crater current and post-flow.
Pulse TIG from 0.5 to 500 Hz lets you weld thin stainless and aluminium with less heat and less distortion, and gives the stacked-dime bead that stainless fabricators, bicycle and fitness-frame makers and food-equipment shops look for. AC balance sets how much of each cycle cleans the oxide and how much penetrates; AC frequency tightens the arc cone for narrow beads on aluminium.
A water output on the front panel connects to a water-cooled torch and an AquaWeld 15 or AquaWeld 20 cooler for all-day work at high current. The machine is IP23S rated with class H insulation, weighs about 36 kg and runs on forced-air cooling.
Typical users: stainless steel fabrication, aluminium bodies and tanks, pressure vessels and pipelines, bicycle and fitness equipment, container and plant construction, and maintenance shops that need TIG precision and MMA convenience in one machine. Supported Worldwide by our technical team on WhatsApp and video call.
