Abstract:
A hydraulic port weld stud that includes a stud portion having a longitudinal axis and a first bore formed along the longitudinal axis less than an entire length of the stud portion. A port portion extends along an axis transverse to the longitudinal axis of the stud portion. The port portion includes a second bore extending along the transverse axis and intersects the first bore of the stud portion. The port portion and stud portion are integrally formed without the need for a joining or welding operation.
Abstract:
A stud welding apparatus includes a power supply and a stud welding tool having a welding head portion and a cable receiving portion. A composite cable having first and second ends is coupled at a first end to the stud welding tool at the cable receiving portion and to the power supply at the second end of the composite cable. If the stud feeder is present, the second end of the composite cable can be coupled to the stud feeder. The composite cable includes a conductor having no individual electrical isolation and at least one control lead electrically isolated from the conductor. The conductor and the at least one control lead are surrounded by an outer non-conductive layer.
Abstract:
A method of welding a stud (11) is provided. In another aspect of the present invention, a welding system is provided for a weld stud (11). A further aspect of the present invention employs a weld stud (11) with a substantially conical end section (29). Still another aspect of the present invention includes a welding method, wherein an aluminum or aluminum alloy stud (11) is brought into contact with an aluminum or aluminum alloy base material (14), voltage is applied between the stud (11) and the base material (14), the stud (11) is lifted slightly off the base material (14), an arc is generated, the tip of the stud (11) and the section of the base material (14) to be melted are melted, pressure is applied to the tip of the stud (11) and the section of the base material (14) that has been melted and the stud (11) and base material (14) are welded together, the current is divided into at least three stages and incrementally increased from the beginning to the end while the main arc is generated, and/or the molten tip of the aluminum or aluminum alloy stud (11) is applied under pressure to the molten base material (14) in under five milliseconds after the arc current has been cut off.
Abstract:
Stick and stud welding apparatus which utilizes a microprocessor (30) and related, RAMs (32) ROMs (33) and peripheral interface devices (3 1, 32, 35) to control the welding parameters. The ideal desired weld current and weld cycles in the case of stud welding can be selected depending upon the mode of operation and/or stud conditions. The program for the microprocessor instructs the microprocessor to periodically compare the actual welding current to the ideal current, compute the difference and alter the phase firing time of an SCR bridge to compensate or adjust the welding current to the ideal current. In the case of stud welding mode, the program further instructs the microprocessor to reference the selected number of cycles, compute the total energy delivered across the stud and workpiece gap from actual current, welding terminal voltage and time and enlarge the number of actual weld cycles to a given percentage of that initially selected to provide a total energy input to the stud as selected. In the stud mode, the pilot arc current and cycles may likewise be selected and controlled. Such parameters as pilot arc current, pilot arc cycles, main welding current, main welding current cycles, total energy, welding terminal voltage and error occurrence are displayed visually by means of lights (28) and/or written printout (29).
Abstract:
The invention relates to the manufacture of hybrid joints more particularly to the manufacture of joints between parts made of differing materials and most particularly to the manufacture of a metallic component comprising a plurality of preformed projections which penetrate composite fabric within a composite part. Particularly there is a method of forming an array of projections on a surface of a metallic component, the method including the steps of bringing at least one preformed projection into at least close proximity to the surface of the component and causing a portion of the projection and a portion of the component in the region of an intersection thereof to at least partially melt, and causing them to be joined together.
Abstract:
Method of joining studs (12) to workpieces (14), in particular for the purpose of stud welding, comprising the steps of: acquiring at least one dimension (D) of a stud (12) to be joined, through application of a sensing element (26, 28) to the stud (12) and through acquisition of a travel distance (P 1 , P 2 ) of the sensing element (26, 28) required for this purpose; and joining the stud (12) to a workpiece (14), if the dimension (D) of the stud (12) is within an allowable tolerance range the allowable tolerance range being adapted in dependence on the travel distance (P 1 , P 2 ) of the sensing element (26, 28) in the case of at least one preceding method step.
Abstract:
An arc welding apparatus 1 comprises a welding tool 2 and a gas supplying apparatus 8. The welding tool 2 comprises a head 5 for holding a weld bracket 3 to face a weld surface of the bracket 3 with a workpiece 4, and a shield 7 for forming a shield space 6 to enclose a gas between the head 5 and the workpiece 4 to generate an arc to weld the weld bracket to the workpiece. The gas supplying apparatus 8 comprises an inert gas supply 9, an activated gas supply 10, a gas mixing apparatus 11 for mixing the inert gas with the activated gas to feed the mixed gas into the shield space 6, and a controller 12. The controller 12 regulates a ratio of the inert gas per the activated gas in accordance with the material of the workpiece, the thickness of the workpiece, or the size of the weld surface of the weld bracket.
Abstract:
An arc welding apparatus 1 comprises a welding tool 2 and a gas supplying apparatus 8. The welding tool 2 comprises a head 5 for holding a weld bracket 3 to face a weld surface of the bracket 3 with a workpiece 4, and a shield 7 for forming a shield space 6 to enclose a gas between the head 5 and the workpiece 4 to generate an arc to weld the weld bracket to the workpiece. The gas supplying apparatus 8 comprises an inert gas supply 9, an activated gas supply 10, a gas mixing apparatus 11 for mixing the inert gas with the activated gas to feed the mixed gas into the shield space 6, and a controller 12. The controller 12 regulates a ratio of the inert gas per the activated gas in accordance with the material of the workpiece, the thickness of the workpiece, or the size of the weld surface of the weld bracket.
Abstract:
Es wird ein Kurzzeit-Lichtbogenschweisssystem (10) zum Schweissen von Elementen (12) auf Bauteile (14) angegeben, mit einer Schweisskopfeinrichtung (16), einer Zuführeinrichtung (24) zur Zuführung von Elementen (12) an das Bauteil (14) und mit einer Steuer- und Energieeinrichtung (20). Diese weist eine Sicherheitsschaltung zur Überwachung der Sicherheitsfunktionen des Schweisssystems (10) auf, die eine speziell gegen unbefugte Benutzung gesicherte Möglichkeit zur partiellen Aufhebung einer Betriebsunterbrechung erlaubt, in dem einzelne Komponenten des Systems (10) selektiv, insbesondere für Wartungszwecke aktiviert werden können.