Explanation

The advantages of the arc welding welding method using the external gas as the protective medium are that the protection of the welding zone is simple and convenient, and the visibility of the arc and the molten pool is good. Simple operation, no need to clean slag after welding, suitable for weld in various positions, easy to realize automatic weld. Gas shielded welding is generally divided into two categories: tungsten insert gas welding and MIG welding: tungsten insert gas welding uses the arc generated between tungsten or cerium tungsten, thorium tungsten electrode and workpiece to conduct melting weld, referred to as TIG welding; The characteristic of gas metal arc welding (GMAW) is to use a fusible welding wire to generate an arc on the workpiece for melting weld. The shielding gas can be argon and other inert gases, CO2 or oxidizing mixed gases, and the corresponding weld methods are called metal inert gas welding (MK welding for short), carbon dioxide gas shielded arc welding (CO2 welding for short) and consumable active gas shielded arc welding (MAG welding for short).

Classification