인코넬 625 FCAW 용접부 물성에 미치는 보호가스의 영향에 대한 연구

A Study on Effect of Shielding Gas on the Mechanical Properties of Inconel 625 FCAW Weldments

Inconel 625 is useful in variety of industrial applications because of the resistance to attack in various corrosive media at temperatures from $200^{circ}C$ to over $1090^{circ}C$, in combination with good low- and high-temperature mechanical strength. Recently, this material is also used widely in offshore process piping in order to extend the maintenance term and improve the quality of anti-corrosion. Nowadays, the flux cored wire is developed and applied for the better productivity in several welding position including the vertical position. In this study, the weldability and weldment characteristics of inconel 625 are considered in FCAW weld associated with the several shielding gases in viewpoint of welding productivity.