Abstract: An electrode clamping device is provided for mechanically clamping a non-fusible, rod-shaped welding electrode in a welding torch. The electrode clamping device has a collet which is mounted into the welding torch from the rear into a collet housing of the electrode clamping device, which surrounds the collet. The collet is arranged so as to be movable along the longitudinal axis of the rod-shaped welding electrode relative to the collet housing, which surrounds it, in order to mechanically fixedly clamp and release the rod-shaped welding electrode.

Abstract: A contact for a vacuum interrupter of a low, medium or high-voltage switchgear includes a contact rod composed of a first electrically conductive material and extending along a longitudinal axis of the contact, and a contact piece composed of a second electrically conductive material and fastened to an end face of the contact rod. The contact rod and the contact piece are materially bonded to one another at a connecting face. At least one of the contact rod or the contact piece has a wall which delimits the connecting face, rises perpendicularly to the longitudinal axis and is disposed such that the contact piece and the contact rod are also force-lockingly connected to one another by a force acting transversely to the longitudinal axis between the contact piece and the contact rod. A production method for such a contact is also provided.

Abstract: Clamping device (2) for clamping a non-consumable welding electrode (3) with an electrode holder (2A) which has a receiving chamber (2B) aligned in the longitudinal direction for receiving a welding electrode (3) which is insertable therein and at its front end has an end portion (2C) which widens conically towards the forward end and can be compressed by means of a clamping heat sink (2D) for holding the welding electrode (3), thus producing a large-surface cooling end face (KSF) for cooling the welding electrode (3).

Abstract: A MIG/MAG welding torch body includes a second channel, which is arranged coaxially to the central channel, and a further third channel, which is arranged coaxially to the second channel, wherein a connection is provided between the second channel and the third channel. The first channel has an orifice in the center of the receiving part, the second channel has an orifice on the lateral side of the receiving part, and the third channel has an orifice on the lateral side of the receiving part.

Abstract: A tungsten inert gas welding torch body, a TIG welding torch handle, and a TIG welding torch has a gas channel terminating in front of the distal end of a plug-in element in an inlet opening arranged on the shell side of the plug-in element, and a central inlet mouth at the distal end of the plug-in element terminating in front of the distal end of the plug-in element in a return opening on the shell side at the plug-in element. The TIG welding torch handle has a second channel arranged coaxially to the central channel, and a third channel arranged coaxially to the second channel. A connection is between the second channel and the third channel. The first channel has a mouth in the center of the receiving part, and each of the second and third channels has a mouth on the shell side of the receiving part.

Abstract: A MIG/MAG welding torch body includes a second channel, which is arranged coaxially to the central channel, and a further third channel, which is arranged coaxially to the second channel, wherein a connection is provided between the second channel and the third channel. The first channel has an orifice in the center of the receiving part, the second channel has an orifice on the lateral side of the receiving part, and the third channel has an orifice on the lateral side of the receiving part.

Abstract: In order to achieve a reliable constant contact in a welding torch with a contact sleeve with a wire forming unit and to reduce the frictional forces for the wire forming process three ball bearing-mounted rollers (4a, 4b, 4c) are arranged one behind the other in the longitudinal direction (x) of the welding torch (10) in the wire forming unit (1), whereas the central roller (4b), when viewed in the longitudinal direction (x), is offset in the wire forming unit (1) relative to the two outer rollers (4a, 4c), when viewed in the longitudinal direction (x), by a transverse offset (V) in a transverse direction (y) transverse to the longitudinal direction (x) in order to form a zig-zag-shaped path for the welding wire (3) through the wire forming unit (1), wherein the axial distance (A) between the two outer rollers (4a, 4c) when viewed in the longitudinal direction (x) is maximally 35 mm, preferably maximally 30 mm, more preferably maximally 20 mm.

Abstract: Clamping device (2) for clamping a non-consumable welding electrode (3) with an electrode holder (2A) which has a receiving chamber (2B) aligned in the longitudinal direction for receiving a welding electrode (3) which is insertable therein and at its front end has an end portion (2C) which widens conically towards the forward end and can be compressed by means of a clamping heat sink (2D) for holding the welding electrode (3), thus producing a large-surface cooling end face (KSF) for cooling the welding electrode (3).

Abstract: A tungsten inert gas welding torch body, a TIG welding torch handle, and a TIG welding torch has a gas channel terminating in front of the distal end of a plug-in element in an inlet opening arranged on the shell side of the plug-in element, and a central inlet mouth at the distal end of the plug-in element terminating in front of the distal end of the plug-in element in a return opening on the shell side at the plug-in element. The TIG welding torch handle has a second channel arranged coaxially to the central channel, and a third channel arranged coaxially to the second channel. A connection is between the second channel and the third channel. The first channel has a mouth in the center of the receiving part, and each of the second and third channels has a mouth on the shell side of the receiving part.

Abstract: A cooled welding torch (1) having a cooling circuit, which cooling circuit extends via a nozzle fitting receiver (3) into a gas nozzle (9), and the gas nozzle (9) is attachable to the welding torch (1) by a defined turn, wherein the cooling circuit is routed through a redirecting element (5), which redirecting element (5) is positioned above the nozzle fitting receiver (3) and may be turned together with the gas nozzle (9), wherein a path of the cooling circuit is switchable by the position of the gas nozzle (9).

Abstract: A plug part for detachably connecting a torch neck of a gas-cooled welding torch to a socket part disposed on a hose package includes a cylindrical pipe element with a flange and with an axially extending channel for a welding wire and for a protective gas and includes a union nut which is rotatably disposed on the pipe element and which includes an inner thread for connection to a corresponding outer thread on the socket part. To produce an optimal connection between the torch neck and the hose package, a bevel is disposed on the flange of the pipe element of the plug part, and the end piece of the socket part has at least one axial slot.

Abstract: The invention relates to a plug part (21) for detachable connecting a torch neck (19) of a water-cooled welding torch (7) to a socket part (34) arranged on a hose package (20), having a cylindrical pipe element (22) with an axially running channel (23) for a welding wire (9) and a protective gas (5) and having at least two cooling channels (29, 30) for supplying and returning a cooling fluid, and a union nut (24) rotatably arranged on the pipe element (22), the union nut having an internal thread for connection to a mating external thread on the socket part (34), the invention further relating to such a socket part (34). In order to produce an optimal connection between the torch neck (19) and the hose package (20), a flange (25) having at least one receiving opening for receiving a pin-like element (36) of the socket part (34) is arranged on the pipe element (22) of the plug part (21) in order to fix at least one angular position of the torch neck (19).

Abstract: The invention relates to a wire inlet nozzle (27) for fastening in a coupling (29) of a hose package (21), comprising a wire inlet element (32) and a fastening means (31) for a wire core (26) for guiding a welding wire (9), wherein a main body is formed between the wire inlet element (32) and the fastening means (31) and a cavity (56) is formed in the wire inlet element (32), in which cavity at least one sealing element (57) having an axial opening (59) for guiding the welding wire (9) is arranged. In order to prevent an escape of the protective gas in the wire inlet nozzle (27) in a direction opposite to the main conveying direction of the welding wire (9), the main body forms a first part (54) of the wire inlet element (32), and a second part (55) of the wire inlet element (32) can be detachably connected to the first part (54), and the main body is designed as a separating plane for independently fastening the wire core (26) and the sealing element (57).

Abstract: The invention relates to a plug part (21) for detachably connecting a torch neck (19) of a gas-cooled welding torch (7) to a socket part (34) disposed on a hose package (20), comprising a cylindrical pipe element (22) with a flange (25) and with an axially extending channel (23) for a welding wire (9) and for a protective gas (5) and comprising a union nut (24) which is rotatably disposed on the pipe element (22) and which comprises an inner thread for connection to a corresponding outer thread on the socket part (34). The invention also relates to such a socket part (34). The aim of the invention is to produce an optimal connection between the torch neck (19) and the hose package (20). This is achieved in that a bevel (32) is disposed on the flange (25) of the pipe element (22) of the plug part (21), and the end piece (35) of the socket part (34) has at least one axial slot (39).

Abstract: The invention relates to a plug part (21) for detachable connecting a torch neck (19) of a water-cooled welding torch (7) to a socket part (34) arranged on a hose package (20), having a cylindrical pipe element (22) with an axially running channel (23) for a welding wire (9) and a protective gas (5) and having at least two cooling channels (29, 30) for supplying and returning a cooling fluid, and a union nut (24) rotatably arranged on the pipe element (22), the union nut having an internal thread for connection to a mating external thread on the socket part (34), the invention further relating to such a socket part (34). In order to produce an optimal connection between the torch neck (19) and the hose package (20), a flange (25) having at least one receiving opening for receiving a pin-like element (36) of the socket part (34) is arranged on the pipe element (22) of the plug part (21) in order to fix at least one angular position of the torch neck (19).

Abstract: A cooled welding torch (1) having a cooling circuit, which cooling circuit extends via a nozzle fitting receiver (3) into a gas nozzle (9), and the gas nozzle (9) is attachable to the welding torch (1) by a defined turn, wherein the cooling circuit is routed through a redirecting element (5), which redirecting element (5) is positioned above the nozzle fitting receiver (3) and may be turned together with the gas nozzle (9), wherein a path of the cooling circuit is switchable by the position of the gas nozzle (9).

Abstract: The invention relates to a wire inlet nozzle (27) for fastening in a coupling (29) of a hose package (21), comprising a wire inlet element (32) and a fastening means (31) for a wire core (26) for guiding a welding wire (9), wherein a main body is formed between the wire inlet element (32) and the fastening means (31) and a cavity (56) is formed in the wire inlet element (32), in which cavity at least one sealing element (57) having an axial opening (59) for guiding the welding wire (9) is arranged. In order to prevent an escape of the protective gas in the wire inlet nozzle (27) in a direction opposite to the main conveying direction of the welding wire (9), the main body forms a first part (54) of the wire inlet element (32), and a second part (55) of the wire inlet element (32) can be detachably connected to the first part (54), and the main body is designed as a separating plane for independently fastening the wire core (26) and the sealing element (57).

Abstract: There is described a device and a method for operating an injection device for an injection molding machine which is provided with an extruder screw that is driven by an electric machine. Acceleration values and/or values depending on an operating point of the electric machine are used for calculating an injection pressure and/or a ram pressure, thus dispensing with the need for a pressure sensor.

Abstract: A vacuum interrupter has a tubular insulating body and a contact system with a moving contact and a fixed contact each connected to power supply bolts, which are passed out of the vacuum interrupter in a vacuum-tight manner. A control electrode is DC-connected to the fixed-contact power supply bolt. A damping shield, which is arranged on the insulating body, is conductive and overlaps the control electrode in an axial direction. The vacuum interrupter has good shielding properties while at the same time improving the dielectric insulation. The control electrode extends out in the form of a toroid in the region of overlap with the damping shield, the damping shield is drawn inwards so as to correspond to the toroid, and the fixed-contact power supply bolt is constricted so as to correspond to the contour of the damping shield and the constriction is fitted such that the drawn-in region of the damping shield extends around the constriction.

Abstract: There is described a method for operating an injection molding machine, which comprises a forming tool, an injecting device and a digital regulating and/or control device at least for regulating and/or controlling the injecting device. When regulating and/or controlling the injecting device, a pressure regulation and/or pressure control for regulating and/or controlling the injection device is switched over subject to the reaching of a transition criterion, whereby a value is established that is used for determining the transition criterion. At least one extrapolation value is established for at least one measured value, whereupon the extrapolation value is compared with the transition criterion and the pressure regulation and/or control of the injection molding machine or is switched over to the pressure regulation and/or the pressure control.