PURPOSE: To form a satisfactory weld surface without sagging in three o'clock welding by irradiation of an electron beam by placing upward the rear surface of a work, irradiating the beam thereon to suppress the downflow of the formed beam and absorbing the extruding force in the solidifying stage.
CONSTITUTION: The rear surface to be irradiated of a work is placed upward and the work is welded by an inclined electron beam in three o'clock welding by irradiation of said beam. The downflow of the formed penetration bead is suppressed by such inclination and the bead extruding force is suppressed by the solidification on cooling of the weld zone, by which the satisfactory surface having no sagging is formed on the rear of the weld. The effect is higher as the thickness of the welded plate is larger.
| JPS5630085 | FILLET WELD MEHTOD |
| JPH0289584 | STRUCTURE OF ELECTRON BEAM WELD ZONE |
KITA HISANAO
KARATSU YOSHINORI
UEHARA TAKEO
