The welding is attempted to join two metals or thermoplastic materials by adding or not joining a material together.

The most important development process of welding technology II. It is based on World War II. The carbon and metal arc sources discovered in the 19th century were losing their properties with the effect of the weather. Porous structures were formed because the source was in constant contact with the open air, causing cracks and breaks in the welding process.

World War I led to studies on lighter and harder metals. The development of welding technology is also essential for the development of advanced technology vehicles such as aircraft, ships and armored vehicles. Today, TIG (Tungsten Inert Gas) and MIG (Metal Inert Gas) welding types, which are the most used after arc welding, have been exposed.