A device (10) for thermally joining workpieces has a torch (1) and an extraction unit (2) for extracting fumes that are produced during welding, cutting or soldering processes. At least one sensor (3) determines the position and/or position changes of the torch (1) and/or a reference point in the area relative to a reference position of the torch (1) and/or of the workpiece that is to be processed. Volume flow of extracted fumes at the extraction unit (2) acting at the torch (1) is adjusted as a function of the determined position and/or position change of the torch (1).

Disclosed is a welding torch. The welding torch comprising a torch head, a cup, a handle and a connector removably. Further, the torch head comprising a first tube, a second tube and an extension member. Further, the first tube and the second tube joined together in parallel along the length of the first tube and the second tube. Further, the extension member coupled to a rear end of the second tube. Further, the cup removably coupled to a front end of the first tube. Further, the handle removably coupled to the rear end of the extension member. Further, the connector removably enclosed within the handle. Further, the connector connects to a gas supply hose, wherein the welding torch is generally parallel to the gas supply hose.

Described is a heated gaseous welder system and associated methods of welding plastic with the heated gaseous welder system. The heated gaseous welder system includes a welding tool and a welder control unit. The welder control unit includes a gaseous control system and a heater control system. The gaseous control system is configured to selectively supply a gas to the welding tool and control at least one characteristic of the gas supplied to the welding tool. The heater control system is configured to selectively control power supplied to the welding tool.

Orbital welding purge systems including a source, a supply line, an outlet, a flow control system, and a wireless control system. The source provides a supply of a purge gas. The supply line is in fluid communication with the source. The outlet is disposed on at an end of the supply line downstream of the source. The outlet is configured to direct the purge gas to a target weld area when the outlet is disposed proximate the target weld area. The flow control system is configured to selectively control the flow of the purge gas in the supply line from the source. The wireless control system is configured to control the flow control system. In some examples, the orbital welding purge system includes a differential pressure gauge. In some examples, the orbital welding purge system includes a plurality of additional supply lines.

An end assembly for use with a welding device having a contact tip, a diffusor body, and a gooseneck. The contact tip has a convex end surface that contacts and mates with a concave end of the diffuser body. The diffuser body forms a blind bore forming central web and a series of passageways. A longitudinal passageway segment is formed in the contact tip parallel with the central longitudinal electrode bore of the contact tip. A second passageway segment joins the first longitudinal passageway segment. When the contact tip is affixed to the diffuser body, a chamber is formed at the base of the contact tip communicating with the diffuser body passageways. Shielding gas that flows into the diffuser body passes through the web passageways into the chamber and through the first and second passageways of the contact tip to provide shielding gas to the weld site and cool the contact tip during welding operations.

Methods and apparatus are disclosed relating to mixing fluids in welding-type equipment. In some examples, a welding-type power supply (and/or wire feeder) may include multiple fluid paths through which to provide fluid from multiple fluid reservoirs to multiple welding-type tools. The power supply may be configured to automatically control fluid flow rates through the fluid paths via proportional valves. Further, the welding-type power supply may be configured to allow and/or prohibit mixing of fluids from different flow paths via control of various valves.

A rotating power connection for connecting an electrical supply power cable to an electric welding torch body is provided. In the rotating power connection, the mechanical load is carried by steel bearings, and the electric load is carried by multi-contact, spring loaded fins made out of highly conductive materials or coatings. In some examples, a rotating power connector is affixed to a torch before the power connection to a wire feeder. The rotating power connector advantageously allows for rotation of the welding torch relative to the unicable while providing continual electrical connection at the high current levels employed in welding applications.

A system and method for controlling fume extraction during a welding process that includes a control system that is operatively connected to a welding work cell for regulating the fume extraction flow rate for each weld in a welding sequence comprising at least two or more welds.

The present invention enables even a beginner to acquire the technique easily and perform suitable spot welding, and achieves improved workability, improved welding quality, improved productivity, and the like. The present invention includes a torch body 2 for passing a shielding gas, a tungsten electrode rod 5 inserted into the torch body 2 and connected to a cathode, a constricted nozzle 6 for supporting a distal end portion of the tungsten electrode rod 5 concentrically, defining a gas passage 6e between the tungsten electrode rod 5 and the constricted nozzle 6 for flowing a shielding gas G, and discharging the shielding gas G from the constricted nozzle 6 at a higher speed than the shielding gas G discharged from the distal end of the torch body 2, and a cylindrical electrode nozzle 7 having conductivity arranged concentrically with the tungsten electrode rod 5 on the outer circumference of the constricted nozzle 6, connected to the anode via a ground cable 18, and configured to have a tapered shape at a distal end portion, wherein the tapered distal end portion is located further outside than the distal end portion of the tungsten electrode rod 5, gas vent ports 7c and 7d of the shielding gas G are provided on the electrode nozzle 7.

A welding system having a welding power supply coupled to a fume extractor is provided. The fume extractor may be coupled to control circuitry configured to operate the welding power supply. The control circuitry may be configured to begin, terminate or modify the operation of the fume extractor prior to the establishment of a welding arc, after the termination of the welding arc, or both. The control circuitry may be further configured to modify the operation of the fume extractor based upon a type of welding process used.