Diffusible Hydrogen Concentration in Draw Arc Stud Weldments

The mechanized drawn arc stud welding is a well established process in steel construction for joining technique pin shaped elements, especially the field of composite constructions. Therefore, commonly applied on sites under different climatic conditions. characterized by its relatively high heat input due to current and weld pool protection that realized ceramic ferrule holding metal vapor as shielding gas. However, turbulences inside during cause contaminations with atmospheric humidity. Furthermore, cooling rate results strongly hardened heat-affected zone considerable residual stress state parent material. Thus, there risk hydrogen assisted cold cracking, strength steels or adverse knowledge about expectable concentration fundamental evaluating cracking susceptibility. In this study, effect storage conditions consumables are investigated evaluated regarding their resulting metal. For determination diffusible method based carrier gas hot extraction used.