ELECTRIC ARC WELDING METHOD Russian patent published in 2003 - IPC

FIELD: processes of electric arc welding with use of coated electrodes, possibly at making important-designation constructions. SUBSTANCE: method comprises steps of applying constant value of welding voltage and electric current to electrode and to arc and igniting electric arc by contact method; additionally applying on arc high-frequency low voltage; initiating SKIN-effect in peripheral zone of electric-arc discharge in such a way that to reduce number of ionization and recombination acts for each discharge; then lowering temperature in zone of SKIN-effect and contracting arc. EFFECT: enhanced stability of electric arc, increased fusion depth of welded seam, improved quality of seam due to received fine-grain structure. 3 cl, 1 dwg