Abstract:
Ein Verfahren zur kontinuierlichen Herstellung von Koaxialkabeln (224) mit einem dünnwandigen, radial geschlossenen äußeren Leiter aus NE-Metall, umfasst das Zuführen eines flachen Bandes des NE-Metalls zu einer Umformvorrichtung (212), wobei die Dicke des Bandes der Wandstärke des Koaxialkabels entspricht. Die Umformvorrichtung ist zum kontinuierlichen Umformen des zugeführten flachen Bandes in eine dem äußeren Leiter des Koaxialkabels entsprechende Form um einen vor dem Schließen des äußeren Leiters zugeführten Kabelkern herum eingerichtet. Nach dem Umformen liegen zwei gegenüberliegende Kanten des flachen Bandes in einem Kontaktbereich bündig aneinander an, die von einer Schweißvorrichtung (216) kontinuierlich mittels eines Lasers miteinander verschweißt werden, welcher Licht einer Wellenlänge kleiner als 600 nm abstrahlt. Der Laser erhitzt einen Punkt in einem Schweißbereich, welcher einen Durchmesser aufweist, der kleiner als 20% der Querschnittsabmessung des Koaxialkabels ist. Das verschweißte Koaxialkabel wird von dem Schweißbereich abgezogen und nach Einbringen einer Parallel- oder Schraubenwellung in einer Aufnahmeeinrichtung (226) aufgenommen.
Abstract:
용접부 내기공성 및 피로 특성이 우수한 도금강판 용접부재 및 이의 제조 방법이 개시된다. 본 발명의 일 실시예에 따른 용접부 내기공성 및 피로 특성이 우수한 도금강판 용접부재는 제1 부재 및 상기 제1 부재 상에 일부가 겹치도록 적층된 제2 부재를 겹치기 아크 용접을 통해 형성된 용접 금속부를 포함하며, 상기 용접 금속부의 토우 각(toe angle, θ)은 45° 이하이며, 상기 제1 부재 및 상기 제2 부재는 도금강판이다.
Abstract:
The present application relates to a method of producing a welded metal blank (16), comprising the steps of: cutting a first initial metal sheet (1) and a second initial metal sheet (3) from a first (2) and second metal strip (4), joining the first and second initial metal sheets (1, 3) by welding so as to obtain an initial welded metal blank (9), the initial welded metal blank (9) comprising a weld joint (10) joining the first and the second initial metal sheets (1, 3); and cutting said initial welded metal blank (9) by a process involving metal melting so as to obtain at least one final welded metal blank (16) comprising a first metal blank portion (17) and a second metal blank portion (18) joined by a weld joint portion (19) consisting of a portion of the weld joint (10) obtained during the joining step. The application relates also to a corresponding welded metal blank (16), a method of producing a press-formed welded metal part, a corresponding press-formed welded metal part and an installation for producing such welded metal blank.
Abstract:
Flowforming processes for the production of corrosion resistant alloy tubes are disclosed, the processes comprising: deforming a corrosion resistant alloy plate to form a hollow cylindrical preform having a longitudinal seam region located between two abutting ends of the deformed plate; welding the longitudinal seam region to join together the abutting ends; and flowforming the hollow cylindrical preform to produce a corrosion resistant alloy tube.
Abstract:
The invention pertains to an electric arc welding method for creating a multi-pass welded joint comprising the following steps: - a first stand-alone toe weld (41) on a first construction element (10), - then, arranging the first construction element (10) and a second construction element (20) in a joining position, with a distance (42) being present between the first stand-alone toe weld (41) and a root area (32) of the welded joint to be created, - while maintaining the joining position, making a first weld connection between the first construction element and the second construction element by applying a root pass (43) at the root area, - then, applying one or more filling beads (44), wherein the first stand-alone toe weld, the root pass and the one or more filling beads together form part of the welded joint, wherein the first stand-alone toe weld forms the toe of said welded joint at the side of the first construction element.
Abstract:
A system and method of hybrid welding a dual fillet weld (301, 302). The system includes a laser system that leads a first torch (320) and preheats at least one workpiece (WP1, WP2). The system also includes a first welding power supply (430) that supplies a first welding waveform to a first wire (330) via the first torch (320). The first welding waveform creates a first arc (303) between the first wire (330) and the at least one workpiece. The system further includes a second welding power supply (440) that supplies a second welding waveform to a second wire (335) via a second torch (325). The second welding waveform creates a second arc (304) between the second wire (335) and the at least one workpiece. A controller (450) in the system is operatively coupled to the first power supply (430), the second power supply (440) and the laser system. The controller (450) synchronizes the first welding waveform and the second welding waveform such that welding current pulses of the second welding waveform at the second torch (325) are not in phase with welding current pulses of the first welding waveform at the first torch (320). The system is set up such that the first arc (303) and the second arc (304) are across from each other on opposite sides of a weld.