Patent ID: 7078648
Filing Date: 2006-07-18
Classification: B23K

Abstract:
1. A curved electrode for welding comprising: an installing portion to be installed in an electrode holder; an offset portion by which an offset amount is obtained; and a tip portion which comes into contact with a material to be welded, at least the installing portion being formed separately from the offset portion and engaged into a tapered hole formed within the offset portion, the installing portion having a substantially T-shaped or L-shaped cooling hole formed in the inside thereof and constructed of a vertical hole and a horizontal hole intersecting at a substantially right angle, and the offset portion having another cooling hole formed in the inside thereof so as to correspond and connect with the horizontal hole and extend toward the tip portion side, wherein C-chamfering or R-chamfering is conducted to at least a part of a corner on the tip portion side in the intersecting portion of the vertical hole and the horizontal hole of the installing portion.