TIG Welding Machine

OTC DAIHEN DA350P Digital Inverter AC/DC Pulse TIG Welder

The DA350P is a fully digital inverter-controlled AC/DC pulse TIG welder from OTC DAIHEN. It delivers precise arc control for both ultra-thin and medium-thick plates, making it suitable for a wide range of metals including alloy steel, aluminum alloy, magnesium alloy, titanium alloy, copper, and stainless steel. With adjustable AC frequency of 30–200Hz and pulse frequency of 0.1–500Hz, the arc is highly concentrated for excellent bead appearance. A 100% duty cycle at 220A ensures reliable performance on medium-thick plates. Features such as automatic tungsten shaping, quick arc starting, and real-time current adjustment during welding enhance usability and efficiency.

✨ Key Technology Advantages

• Full digital inverter control — Fine arc adjustment for multiple metal materials.

• Wide frequency range — AC 30-200Hz, pulse 0.1-500Hz, high arc concentration.

• Deeper penetration at same current — Faster wire melting, increased welding speed.

• Multiple modes — DC TIG, AC TIG, AC/DC TIG, DC stick welding in one machine.

• 100% duty cycle at 220A — Meets long-duration medium-thick plate welding needs.

• Automatic tungsten shaping — Quick arc start, stable arc, reduced tungsten consumption.

• Real-time current adjustment — Adapts to varying thickness and gaps.

• 100 job memory — Secure parameter storage, easy management.

🔧 Primary Applications

Aerospace, rail transportation, automotive manufacturing, precision instruments, chemical vessels, mold making – TIG welding of aluminum alloys, magnesium alloys, titanium alloys, stainless steel, copper, and alloy steels.

📊 OTC DAIHEN DA350P Technical Specifications