Manual Welding Processes

In arc welding, thermal energy is generated by electric current. Inside the welding torch, an electrode creates the arc and melts in the process, serving both as the heat source and the filler material. To protect the workpiece from reacting with oxygen in the surrounding air, a shielding gas is used during welding. This protects the weld seam from oxidation during processing and helps ensure long-term corrosion resistance. The most common processes are:

MAG Welding (Metal Active Gas Welding)

MAG welding uses a chemically active shielding gas, typically carbon dioxide, often mixed with argon and oxygen. These gases react with the material being processed. MAG welding is the most widely used welding process and is commonly applied to steel and steel alloys.

MIG Welding (Metal Inert Gas Welding)

MIG welding uses a chemically inactive shielding gas, typically pure argon or helium. The shielding gas does not react with the metal being processed. MIG welding is particularly suitable for aluminium and stainless steel.

TIG Welding (Tungsten Inert Gas Welding)

TIG welding differs from MIG and MAG welding in that the electrode does not melt during the welding process. Because a tungsten electrode is used, the arc can be guided with a very high degree of precision. TIG welding produces extremely high-quality and durable weld seams and is especially well suited for fine work and thin sheet metal. It is also ideal for stainless steel. Although TIG welding is comparatively more expensive, it is the right choice for components where appearance and seam quality are particularly important.

Our trained manual welders are qualified in all three processes in accordance with DIN EN ISO 9606. Welding in accordance with a welding procedure specification (WPS) is standard practice at MÜNCH.