In view of operational action and equipments, the flux cored arc welding or FCAW
is similar welding process of metal inert gas or MIG welding.
arc welding method is fully automatic or semi automatic. A consumable flux coated
tubular electrode is continuously fed into the welding joint. To producing an arc,
a constant current or voltage supply is required.
In this welding process may be or may not be used a shielding gas, because the electrode
contains itself a flux coated. In the time of welding the consumable electrode is
fused and flux also fused same time. So fused flux itself make an atmospheric shielding
gas, which prevents inclusion of atmospheric harmful gases. This welding process
is widely used vassal construction industries, because it has large rate of metal
For getting good mechanical properties of weld joint, the environment should be wind
free. Otherwise shielding of welding zone will be broken. Generally it produces less
weld defect joint. Produced slag is easily removed from weld joint.
The main disadvantage is the weld joint is not visible due to it producing excessive
smoke. So how is the weld joint is made, it is only predictable operation. It need
also high skilled operator. It has consumable electrode is costlier than other welding
The main advantage of this welding process is it has no need of any kind of shielding
gas. The welding speed is high and metal deposit rate is also high. The weld surface
may not need clean properly.