Patent ID: 6093907
Filing Date: 2000-07-25
Classification: B23K

Abstract:
Welding contact tip having a wire passage for a welding wire in a center thereof, comprising a tip body and a tip end which are detachable from each other by screw-in type or taper force-in type structure, wherein an expanded taper portion which is open with a passage area expanding is formed at an opening portion on a proximal side of the wire passage of said tip end, a rear end of said tip end and a front end of said tip body have each screw portion and each contact face except the screw portion, which is in contact with each other, said contact face having a contact area which is more than 10% the rear face of said tip end or the front face of said tip body, said wire passage in said tip body having a diameter 1.03-1.50 times a wire diameter, said wire passage in said tip end having a diameter 1.03-1.25 times the wire diameter.