Tig welding or braze-welding with metal transfer via a liquid bridge

摘要

An arc welding process employing a TIG torch provided with a non-consumable electrode (4) and a consumable filler wire (1), involves feeding the consumable wire at an angle (alpha ) of less than 50 degrees to the axis of the electrode; guiding and keeping the end of the consumable wire permanently at a distance (D) of less than 2 mm from the end of the tungsten electrode of the TIG torch; and transferring metal to the welded joint via a liquid bridge (3) so that there is permanent contact between the puddle of molten metal (2) forming the welded joint (6) and the melted end of the filled wire.