Ronch R405 TIG
The Ronch R405 TIG is an inverter welding equipment with TIG, pulsed TIG, and SMAW, designed for demanding production. It has a control panel with process selector, 2T/4T modes, pre- and post-flow, and outputs for gas and coolant.
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- Download the User's Manual
- Request the service manual
Sectors such as food and beverages, metalworking, oil & gas, transportation, and industrial maintenance require high-quality welds with heat control and professional aesthetics. The Ronch R405 TIG is the ideal welding equipment to meet these requirements.
Technical specifications of the Ronch R405 TIG
| Feature | Value | ||||
|---|---|---|---|---|---|
| Input power (V) | 3～220/380/440 VAC +10% | ||||
| Frequency (Hz) | 50/60 | ||||
| No-load voltage (V) | 80 | ||||
| Pulse frequency (Hz) | 0.2 - 500 | ||||
| Amperage upslope time (sec.) | 0 - 15 | ||||
| Amperage downslope time (sec.) | 0 - 15 | ||||
| Current range (A) | 15 - 400 | ||||
| Work cycle | 400A a 60% / 310A a 100% | ||||
| Postflow/Preflow (sec.) | 0 - 99.9 | ||||
| Efficiency (%) | 85 | ||||
| Protection class | IP21S | ||||
| Refrigeration | Air cooled | ||||
| Shipping dimensions (mm) | 620 / 320 / 550 mm | ||||
| Net weight (kg) | 42 | ||||
Benefits of choosing a modern and reliable TIG welder
- Clean welds, minimal rework: TIG is a clean process with no slag and very low spatter, which shortens finishing times and improves the final appearance.
- Thermal control and precision: GTAW offers a concentrated arc and fine heat control for stainless steel and thin sheets, maintaining tolerances and weld bead geometry.
- Pulse for less distortion: Pulsed TIG helps lower total heat and stabilize the weld pool, a plus when you need to avoid distortion.
- High amperage comfort: Water-cooled torches allow for long cycles with better ergonomics, especially when welding for hours.
- Standardized operation: The panel with pre/post-flow, ramps, 2T/4T, and pulse parameters facilitates repeatability between shifts and operators.
Sectors where TIG is most commonly used
Food and beverages/pharmaceuticals: welding of stainless steel pipes and tanks with sanitary requirements; TIG stands out for its cleanliness and color control, and orbital TIG welding is common in process lines.
Oil & Gas/energy: root passes in steel/stainless steel pipes when heat control is critical for corrosion resistance.
Metalworking: cabinets, exchangers, tools, and precision parts with high dimensional requirements.
Transportation/automotive: visible, highly aesthetic welds in steel/stainless steel.
Metal architecture and premium furniture: exposed stainless steel with clean finishes and minimal need for reworking.
Frequently asked questions about the Ronch R405 TIG
1. Does the R405 TIG weld aluminum?
It works with DC TIG; for aluminum TIG welding, AC/DC is more suitable.
2. What does the equipment include?
Water-cooled SR-18 torch, cooling unit, cart, work cables (ground and electrode holder).
3. How does pulsed TIG benefit me?
It allows you to control the heat and reduce distortion, maintaining the aesthetics and integrity of the weld bead.
4. What do 2T and 4T mean?
They are trigger modes: 2T for short weld beads; 4T for long weld beads with less fatigue and controlled pre/post-flow stages and ramps.
5. What is the electrical power?
Three-phase 3~ 220/380/440 VAC (50/60 Hz) with automatic selection.
6. Actual duty cycle?
400 A at 60% and 310 A at 100%. Plan your passes to take advantage of continuous performance.
7. Can I use remote current control (pedal type)?
The panel has a remote current control and torch switch connector; check local compatibility.
8. What gas is used for TIG on steel/stainless steel?
Typically high-purity argon; TIG does not use flux or generate slag.
9. Weight and dimensions?
42 kg and 620 × 320 × 550 mm for the power source.
10. Why does a water-cooled torch matter?
Because at high amperage it allows you to work longer with better ergonomics and less torch heating.
