Specialized welding of argon and manual electrode and MIG and MEG
Welding has two main categories: fusion and non-fusion welding. Mig and Mag welding or MIG/MAGwelding is in the category of fusion welding. In this welding, the melting operation is performed by electric arc, in fact, when the electrode is near the work piece, an electric arc is created by the current of the device, and the melting operation and finally the connection are performed.
In the work process, the arc can be created a variety of Depending on the angle and amperage of the machine, in the gmaw welding process, which is another name for mig and mag welding, a shielding gas is used to prevent the contact of the work piece with air, if this gas is argon and neutral helium, the name of this welding is mig And if it is carbon dioxide, it is called mag.
MIG/MAG welding is currently the most widely used in Western Europe, Japan and the United States of America. The use of this process will be developed and improved in the future. Research in the field of this process has led to the invention of a high deposition rate welding method called FCAW, TIME. Currently, wires in powder are widely used. (Flux cored arc welding) FCAW arc welding with shielding gas and consumable electrode GMAW arc welding with shielding gas and consumable electrode is often known as MIG/MAG welding
In this process, the heat required to melt the base metal and the electrode is provided through the formation of an electric arc between them. In this process, the electrode is a wire that is constantly fed to the welding pool at a certain speed and is used as filler metal. The electric arc of the welding pool and the surrounding heated areas are protected by a shielding gas or a mixture of gases coming out of the torch head. The shielding gas must completely protect the weld metal. The entry of air can cause contamination of the weld metal.
Welding applications
This welding method is used in various industries due to its efficiency, speed and flexibility.
Marine industries: Mig and Mag welding in the construction and repair of ships and marine structures such as Oil platforms are used under the sea. This welding method is suitable for this type of work due to the possibility of doing it in underwater conditions.
Aircraft production and repairs: Aircraft industry and space from MiG welding and MAG is used for the production and repair of metal parts of airplanes. This process is usually used in the production of aircraft bodies and fittings.
Electronics and electrical industry: In the electronics and electrical industry, MIG and MIG welding is used to connect different metal parts in the production of components. Electronics and electrical equipment are used.
Different industries: Among other uses of this type of welding, we can mention military industries, vehicle equipment.
MIG/MAG welding torch:
GMAW welding tongs are usually called torches. These torches are similar to TIG welding torches, but they are a bit more complicated. The welding wire (electrode) passes through the middle of the torch and its speed is pre-set. The electric current is transferred to the welding wire at the moment the wire exits the torch, and the shielding gas also exits from the torch. In terms of the cooling system, torches are divided into two types: water-cooled and air-cooled.
Air-cooled torches, which are lighter and cheaper, are used for less than 200 amperes and non-continuous work, and for ampere Cold water torch is used for above and continuous work.