Welding is one of the most popular technical works that are needed, for example, in buildings, various structures or renovation of rooms. Although it is a very popular job among Poles, it hides many complicated techniques of execution. Although apparently it is simply joining materials together with a welding machine, there are at least a few techniques for such joining. Each of them is used to connect other types of materials and has its own individual advantages and disadvantages.  

These include techniques such as: 

  •  MIG / MAG, 
  •  TIG,  
  • WIG  
  •  FCAW Innershield 

Welding with the MIG / MAG technique 

The name of this technique is derived from the English language and is called Metal Inert Gas / Metal Active Gas". It is a method of combining materials that are shielded by an inert gas (MIG) and an active gas (MAG). The inert gas can be, for example, helium or argon, and the active substances include, but are not limited to, carbon dioxide. This method is ideal for welding most materials. It is most often used in assembly works or for automatic and semi-automatic welding. MIG / MAG is currently the most widely used welding method. Its advantages are:  

  • high connection quality 
  • high performance 
  • the prospect of robotization of technology 
  • multiple welding positions 

The disadvantages, however, include: 

  • large metal spatter in MAG welding 
  • the need for protection when welding outdoors 
  • the quality of the connections depends on the technical abilities of the welder 

TIG (WIG) method 

From English "Tungsten Inert Gas" (where the German "tungstein" means "gas"). This method consists in creating an electric arc with the use of a non-consumable tungsten electrode in an inert gas shield. This method is used for automatic or manual welding. It is used for welding all types of steel, and it is most often used for joining aluminum and aluminum alloys. It is a very versatile welding method. The advantages of this technique are: 

  • best call quality 
  • the prospect of robotization 
  • possibility of welding in any position 
  • possibility of welding materials of different thickness 
  • no need for post-processing 

Unfortunately, this technique also has disadvantages such as: 

  • low work efficiency in manual execution, low welding speed 
  • use of wind protection in open spaces 
  • experience and high technical skills required 
  • preparation of the workpiece 

FCAW Innershield method 

There is also a method FCAW Innershield (Flux-Cored Arc Welding), which is identical to MIG / MAG with the difference that instead of lithium wire, a wire is used, inside which there is a core with a powder. During welding, the core melts under the influence of temperature and the burned powder forms a shielding gas that protects around the weld pool. That is why this wire is called self-shielding, as it is not necessary to obtain gas from the outside. This process makes the entire welding process much easier.