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OTC MR-315T

OTC MR-315T

DC TIG welding machine with pulsed TIG and Stick modes, up to 315A current, perfect for mild steel, stainless steel, and nickel alloys.

Product Specification

Thyristor-Controlled TIG Welding System OTC DAIHEN® MR-315T

OTC MR-315T Industrial TIG Welding Machine

Heavy-Duty Industrial Platform • 315A Thyristor Class

OTC MR-315T is a high-performance TIG welding machine engineered for precision and efficiency in demanding industrial sectors. Incorporating advanced thyristor control technology, this unit ensures exceptional arc stability and minimal spatter, delivering superior weld quality across a wide range of metals, including mild steel, stainless steel, and nickel alloys.

Key Features

  • Multi-Mode Operation: Supports versatile DC TIG, Pulsed DC TIG, and DC Stick welding modes to handle various fabrication requirements.
  • Advanced Pulse Control: Features a frequency range of 0.5–15 Hz and pulse ratio of 15–85%, allowing for precise heat input management and bead formation.
  • Comprehensive Parameter Suite: Fine-tune your process with dedicated settings for initial current, up-slope, down-slope, and crater fill control.
  • Robust Architecture: Industrial-grade design built to withstand long-term use in high-demand work environments.

Operational Advantages

  • Superior Arc Stability: Thyristor technology minimizes fluctuation, ensuring smooth, predictable welding performance.
  • High-Current Performance: Delivers up to 315A, providing the power necessary for thick plate fabrication and critical joints.
  • Intuitive Operation: Simplified control interface allows for rapid parameter adjustment, increasing throughput in multi-operator shops.
  • Consistent Weld Quality: Excellent control over gas flow and slope timing significantly reduces post-weld rework.

Technical Specifications

Parameter MR-315T Rating
Output Current315 A
Rated Input Power16 kVA (10 kW)
Rated Duty Cycle40%
Max. OCV57 V
Weight120 kg

Process Control

Function Range/Spec
Pulse Freq / Ratio0.5–15 Hz / 15–85%
Gas Pre / After-Flow0.3-0.6s / 3–20s
Up/Down-Slope0.1–5 sec
Dimensions (WxDxH)348 x 592 x 642 mm

Target Industrial Applications

Precision-engineered for reliability across:

Metal Fabrication Ideal for steel and nickel alloy structural assemblies.
Piping & Vessels High-fidelity control for mission-critical pressure components.
Maintenance Versatile performance for onsite industrial repair tasks.

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