DP400 Discontinued Professional CO₂/MIG/MAG Welding Machines

OTC DAIHEN DP400 Digital Pulse Welder (Discontinued)

The DP400 was a high-performance digital pulse welder from OTC DAIHEN, featuring unique IGBT soft‑switching inverter technology with an output frequency of 80kHz. Capacitor discharge enhanced arc starting ensured 100% instantaneous reliable starts. The standard 4‑roll wire feeder with encoder feedback delivered accurate and stable wire feeding. A standard dual‑pulse program enabled high‑quality welding of various materials, including mild steel, stainless steel, aluminum, and galvanized steel. The built‑in intelligent waveform controller provided stable waveform control, delivering excellent arc stability in low‑current and high‑speed welding. Optional pure argon stainless steel software addressed special process requirements for stainless steel. Although discontinued, its technology has been carried forward in the successor model WB-P400.

✨ Key Technology Advantages

• Capacitor discharge enhanced arc starting — 100% instantaneous reliable starts.

• IGBT soft‑switching inverter — 80kHz main frequency for precise control and high efficiency.

• 4‑roll encoder feedback wire feeder — Accurate and stable wire feeding for consistent arc.

• Standard dual‑pulse program — High‑quality welding of mild steel, stainless steel, aluminum, galvanized steel.

• Intelligent waveform controller — Stable waveform, improved weld quality.

• Low‑current and high‑speed stability — Stable arc, uniform beads.

• Optional pure argon stainless software — Meets special stainless steel requirements.

🔧 Primary Applications

Automotive manufacturing, motorcycle frames, steel structures, home appliances, metal fabrication, galvanized steel welding, stainless steel products – especially where reliable arc starting and multi‑material welding are critical.

📊 OTC DAIHEN DP400 Technical Specifications & Accessories