This process, which was developed in 1930s, is commonly used in metal manufacturing industry. Almost all types of metals and alloys can be welded by this method. Generators can be used easily due to the feature of the process. It is a feasible and more efficient method because it has 2-fold welding efficiency compared to the conventional metal arc welding.
In this method, which is known as MIG (Metal Inert Gas) welding, the arc is produced between a melting wire electrode and the work piece. In this process, the arc is produced under a protective gas atmosphere like argon, helium, CO or various gas mixtures. The melting electrode is fed to the welding region automatically through a nozzle. This electrode, which is fed automatically, also acts as a filler because it is melted.
Because there is no need for frequent electrode replace as it occurs in the conventional arc welding, this process is fast and feasible. Furthermore, no clinker is produced on the welding seam and thus, it is possible to accumulate metal in large amounts in the welding region.
Essential protective gas welding methods are seen below:
1- Protective gas welding with non-melting electrode (Tungsten)
A- Welding method including two non-melting electrodes (arkkatom or atomic hydrogen)
B- Welding method including one non-melting electrode (TIG/WIG)
2- Protective gas welding with melting electrode:
A- Welding method under an inert gas atmosphere (MIG)
B- Welding method under an active gas atmosphere (MAG)
MIG WELDING: It is abbreviation for Metal Inert Gas. MIG welding method is a metal arc welding completed under protective effect of the gases of helium and argon gases and mixture of these gases. In this method, melting occurs when the arc is produced between the work piece and the electrode. The electrode is sent to the welding region as a wire in coil, whose feeding pace is under control. The protective gas is blown from the torch and creates a gas layer between the melted metal bath and air. Manual MIG welding is made semi-automatically. If the torch is kept very close to the piece during welding, current automatically increases to melt the wire in a shorter while. This also affects length of the arc. If the torch is kept far from the piece during welding, current automatically decreases and the adjusted arc length is shortened. In such processes, the welder has to keep the arc length at a certain height.
In our company, MIG/MAG welding is made at the highest quality according to all welding conditions according to our customers’ demands.