Yarmonov S. Arc welding process in cross magnetic field effectiveness increase

Object of research: technological process of automatic submerged arc welding with cross-magnetizing effect when nonmagnetic electrode and base materials are using. Subject of research: the structure of magnetic field and electromagnetic processes zones of electrode drops, arc and welding bath in submerged arc welding with cross-magnetizing effect. Research methods: the modelling methods of magnetic fields when electrolytic bath is using and the modelling method of transmission current in flat solid models, the calculated modelling by the method electrostatic analogies. It has been stated, that input devices design of cross magnetic field, in which incidence angle rods to electrode axis is equal to 45° and butt ends of rods are parallel to the plane of the plates to be welded are optimum. The designed input device of cross magnetic field secures increase of cross induction constituent in arc zone to practically zero values. It has been proved, that permanent cross-magnetizing effect in submerged arc welding extends the efficiency of burn-off to 30-35% and allows to decrease or extend the base metal depth penetration by 55%. The engineering method of calculation induction values under the butt ends of rods input devices magnetic field was developed, which allows to project the twin-rods input devices of cross magnetic field with various geometric parameters.