Check out the TIGMaster-250COLD 🔥

2025-12-23

✅ 4-in-1 operation: COLD TIG / PULSE TIG / MMA / LIFT TIG
✅ DC Inverter, 100% duty cycle
✅ Wide current range: TIG 5-250A | MMA 20-220A
✅ Protections: Overheat & Overcurrent
✅ Features: HOT START, ARC FORCE, ANTI-STICK & 2T/4T modes

Cold TIG Welding: A Quick Guide

Cold TIG, often called Cold Arc, Cold Welding, or Low-Temperature TIG, is a specialized TIG welding process designed for joining ultra-thin metals or performing precise, low-heat repairs with minimal distortion. It's not truly "cold," but operates at significantly lower heat input compared to standard TIG.

How It Works: The Pulse is Key

The core technology is an advanced high-frequency pulse. The welding current rapidly switches between:

Peak Current (Pulse): A high, short burst that melts the metal and creates the weld pool.
Base Current: A very low, background current that maintains the arc but allows the weld pool to cool and solidify almost instantly.

This rapid on-off pulsing happens dozens or even hundreds of times per second, allowing for pinpoint control over heat.

Key Features & Benefits:

Minimal Heat Affected Zone (HAZ): Greatly reduces warping, burning through, and color changes (critical for stainless steel).
Welds Thin Materials: Can weld sheets as thin as 0.3mm - 0.5mm (like aluminum foil, thin stainless, or auto body panels).
Precise Control: Perfect for intricate work, edge welding, and small repairs where heat spread must be contained.
Improved Weld Appearance: Often produces a clean, consistent, "stacked dimes" bead with less sagging.

Common Applications:

Automotive body repair (patches, panels)
Kitchen equipment & decorative stainless steel
Artistic metalwork & sculpture
Repairing electronics enclosures
HVAC ducting
Aerospace components (thin-gauge alloys)

Important Parameters on a Cold TIG Machine:

Frequency (Hz): How many pulses per second. Higher frequency = tighter, cooler weld.
Duty Cycle (%): Ratio of Peak Current time to total cycle time. Lower % = cooler operation.
Peak Current & Base Current: Adjusted independently for maximum control.

Cold TIG vs. Standard TIG:

Standard TIG: Uses a steady, continuous DC or AC current. Better for thicker materials and full-penetration welds.
Cold TIG: Uses a pulsed DC current. The tool for heat-sensitive, thin-gauge work where control outweighs penetration.

KeyGree Group Co., Ltd. is a wholly foreign-owned enterprise invested by British in 2009:

· Established: Founded in 2009 (UK investment).

· Scale & Capacity: 80,000m²+ facility producing 700,000+ welding units annually.

· Quality Assurance: Certified to CCC, CE, ISO9001:2015.

· Full-Spectrum Expertise: Vertically integrated from R&D and component manufacturing (transformers, heat sinks, PCBs) to final assembly of machines, torches, and laser systems.

· Complete Solutions: Offering both INDUSTRIAL-grade and household welding equipment lines.

Schedule an On-Site Demo (Client-Funded): Contact our engineering team to arrange verification testing of MIG-300DP's zero-porosity welds on your battery tray designs.

Tel: +86 18058395375

Email: info@keygree.com