In the early 1950s, flux cored wire gas-shielded already asked the city began to develop. But in 1957 began to be widely used commercially. This method can be said to be taken advantage of submerged arc welding with CO2 (refer to solid) of the combination. Solder wire and wrapped in protective perimeter by CO2 gas can produce softer and stable arc and low spatter welding of its features. Early stage of development, only the large wire diameter wire (2.0-4.0mm). Flat welding for a major piece of the horizontal welding. 1972 until the beginning of the development of small wire diameter wire was greatly expanded the field flux cored wire used.
