Core Operational Process
Arc Initiation: A high-frequency, high-voltage spark ignites an arc between the tungsten electrode and the workpiece. The arc temperature can exceed 6,000°C, rapidly melting the welding zone to form a molten pool.
Gas Shielding: The welding torch nozzle continuously discharges inert gases-such as argon or helium-to completely isolate the area from the atmosphere. This prevents oxidation and nitridation of the molten pool and the high-temperature weld seam, ensuring weld purity.
Fusion and Formation: Filler wire can be fed in as needed; the wire melts in the arc and fuses with the base metal. As the arc moves, the molten metal gradually cools and crystallizes, ultimately forming a continuous, dense, and high-quality weld seam.
Key Characteristics
The tungsten electrode does not melt during the process, serving solely as a conductive electrode. This allows for precise control of heat input, making the machine suitable for welding various metals ranging from 0.1 mm to 10 mm in thickness.
By switching between AC and DC polarities, the machine can accommodate the welding requirements of diverse materials, including carbon steel, stainless steel, aluminum-magnesium alloys, and titanium alloys.
