Schutzgases
Schutzgases (shielding gases) are gases used in arc welding and related metal-working processes to shield the molten metal and weld pool from the surrounding atmosphere. By displacing air around the weld, they reduce oxidation, porosity and contamination, helping to achieve a stable arc and desirable fusion characteristics.
They are delivered from pressurized cylinders and directed through the welding torch or a nozzle as a
Gases are commonly categorized as inert or reactive. Inert gases such as argon and helium do not
Common mixtures and process associations include: 100% argon for TIG (GTAW) welding of nonferrous metals; argon
Applications span automotive, shipbuilding, pipelines, construction and repair welding, covering steels, stainless steels, aluminum and other
Safety and handling: shielding gases are stored in pressurized cylinders and must be secured; use regulators