Electric heating – Metal heating – By arc
Reexamination Certificate
2006-02-28
2006-02-28
Shaw, Clifford C. (Department: 1725)
Electric heating
Metal heating
By arc
C219S13700R
Reexamination Certificate
active
07005607
ABSTRACT:
A welding method is disclosed for butt welding a first base material1and a second base material2with each other. To also permit stable and efficient formation of a bead in the form of a fillet weld on a back side of a groove by conducting arc welding from the side of the groove without arranging a bead beforehand on the back side of the groove, the first member1,on which a root face1aand a single groove face1bhave been formed, is brought at its root face1ainto contact with a flat surface2aof the second base material2.A welding wire6is arranged facing on the groove formed by the contact between the first base material1and the second base material2.The first base material1and the second material2are caused to fuse at an area of contact between them by an arc from the welding wire6.A melt, which has been formed by the fusion at the area of contact and the like, is forced out to the back side of the groove to form a bead B4in the form of a fillet weld on the back side of the groove.
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Hirakawa Manabu
Miyanagi Naoki
Sakurai Shigeyuki
Takano Yutaka
Takatani Toru
Crowell & Moring LLP
Hitachi Construction Machinery Co. Ltd.
Shaw Clifford C.
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