An object of the present invention to provide a gas supply device, a gas supply device having a mixing function, a welding device, and a gas supply method, which can prevent rush flow of gas from the gas supply source in the initial stage of gas lead-out from a gas supply source, reduce the cost, and improve the maintenance; and the present invention provides a gas supply device including a gas supply source into which a gas is filled at a high pressure, a single-stage decompressor which is provided at a gas outlet of the gas supply source and which is configured to reduce pressure of a gas led out from the gas supply source to a predetermined pressure, a gas supply line having one end connected to the single-stage decompressor and the other end connected to a use destination of the gas, a solenoid valve provided in the gas supply line, and a flow regulating valve provided in the gas supply line located between the solenoid valve and the use destination.

Methods and apparatuses for extending the range, reach, and/or length of a welding tool. A welding extension in accordance with an aspect of the present disclosure comprises an extension bar that couples between a welding tip and a welding head, such that material passes from the welding head to the welding tip through a bore in the extension bar.

A welding apparatus comprising a first fixing plate and a second fixing plate arranged at an interval; a gas-electric slip ring is connected to the side of the first fixing plate facing the second fixing plate; a hollow shaft drive unit is connected to the side of the second fixing plate facing the first fixing plate; a conductive link is connected to the hollow shaft drive unit and passes through the second fixing plate; a curved conductive nozzle is connected to the conductive link on the outer side of the second fixing plate; and a plurality of support rods are uniformly distributed around the rotational axial direction of the hollow shaft drive unit, and are respectively connected to the first fixing plate and the second fixing plate; the hollow shaft drive unit drives the conductive link to rotate, and the conductive link drives the curved conductive nozzle to oscillate.

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 three-dimensional (3D) metal object manufacturing apparatus is configured to increase the oxidation of ejected melted metal drops for the formation of metal support structures during manufacture of a metal object with the apparatus. The oxidation can be increased by either increasing a distance between the ejector head and a platform supporting the metal object or by providing an air flow transverse to the direction of movement of the melted metal drops, or both.

Cryogenic sources can be used for shielding in wire-based additive manufacturing. Cryogenic shielding can provide better shielding during print, as well as more efficient cooling compared to using regular room temperature shielding gas. Cryogenic shielding can extend the nozzle run time by preventing spatter build up in nozzles. Cryogenic sources also can be used for active part cooling and/or active weld puddle cooling.

A glove box has an enclosure having a glass window top and gloves mounted to the front wall. The enclosure can be tilted to so that one or other, or both, of the work piece and the window can be placed at an angle such as may facilitate processing. The glove box has an environmental control system to both to permit flushing with inert or other desired gases, and to permit heating or cooling. The workstand may have cooling passages as well. Controls are mounted inside the enclosure chamber to permit the operator to change working parameters without removing his or her hands from the gloves. A parameter status display may be located outside the enclosure. The window may be provided with a movable smoked glass filter for use during welding. The workstand may be independently adjustable for angle within the enclosure. The glove box has electrical and cooling service penetrations to permit use of a welding electrode.

A welding system includes a multi-process power supply, a TIG torch, and a TIG power pin for connecting the TIG torch to the multi-process power supply. The multi-process power supply has a power output connection for a MIG torch and a controller. The Controller is configured to command shielding gas and welding current to be provided to the power output connection, and the power output connection is configured to provide the shielding gas and the welding current to a MIG torch when the MIG torch is connected to the power output connection. The TIG power pin connects the TIG torch to the power output connection such that the power output connection is configured to provide the shielding gas and the welding current to the TIG torch. The controller is configured such that at least one of the shielding gas and the welding current is not provided to the TIG torch through the power output connection until a user engages a control member.

Apparatuses, systems, and/or methods for providing welding systems or portions of welding systems that provide a tip-retention device that is configured to direct gas radially towards a contact tip.

A shielding includes a first outer shell member that surrounds a welding torch, is disposed to form a radial gap from the welding torch, and is configured to define a first annular space having a first opening in a bottom portion thereof, a first gas supply member disposed to surround the welding torch inside the first outer shell member, and configured to supply a shielding gas to the first annular space, and a dispersing member disposed below the first gas supply member in the first annular space, and configured to disperse the shielding gas.