A spool gun having a very unique look, due to its arrangement of external features. The spool gun has its wire spool compartment located below the handle and the user's hand, when the user is gripping the spool gun in an operational position. A gas/power cable is connected to the body of the spool gun forward of the handle.

A system, a non-transitory computer readable medium for executing instructions, and a method for fabricating a subsea connector, including selecting a substrate on which to form the subsea connector, positioning the substrate on a welding positioner base, and applying a first weld bead using a first multiple axis robot, applying a second weld bead using a second multiple axis robot, forming a plurality of weld bead layers comprising the first weld bead and the second weld bead, and forming a subsea connector formed from the plurality of weld bead layers.

The invention relates to a method for the dynamic feeding of shielding gas, comprising feeding a shielding gas to a component in a welding operation, sending the temperature of a region of the component; and setting a composition of the shielding gas according to the sensed temperature.

An automatic activator coating device for wire and arc additive manufacture includes a base, a mechanical arm is arranged on the upper side of the base, a clamping mechanism is arranged at the lower end of the mechanical arm, a container bottle is clamped on the clamping mechanism, one end of the container bottle is communicated with a sprayer, one end of the sprayer is communicated with an atomizing nozzle, the container bottle is communicated with the gas bottle, and a gas pressure regulating valve is arranged on the gas bottle; and a piston partition is arranged in the sprayer, the container bottle is communicated with an activator converging cavity in one end of the sprayer, a piston rod and a resetting mechanism are arranged in a mounting cavity in the other end of the sprayer, an open hole is formed in the inner surface of the sprayer

A purge system useful in welding applications to provide a shielding or purging gas to a weld site, preferably of a tube, pipe or construction, while also providing controlled release of an exhaust gas and pressure relief through the use of a permeable body. The purge system is also flame resistant allowing use in close proximity to the weld site. The design facilitates ease of insertion, holding and retraction in a tube, pipe or other construction.

A welding torch (1) includes a cylindrical nozzle (2) in which shielding gas is flown from an opening (3b), and an electrode (4) that is a bar-shaped body projecting from the opening (3b). The shielding gas includes upper shielding gas flowing in an upper region (3u) on an upper side of a central axis (C2) of the electrode (4), and lower shielding gas flowing in a lower region (3d) on a lower side of the central axis (C2) of the electrode (4). Atmospheric pressure of the lower shielding gas is higher than atmospheric pressure of the upper shielding gas. A method of horizontal welding with this kind of welding torch is also defined.

An electric arc torch includes a torch base, and a cooling conduit having a conduit wall forming a central axial bore and having a plurality of longitudinal cooling channels spaced circumferentially around the bore. The cooling channels extend through the conduit wall from a first end portion to a second end portion of the conduit. The cooling channels include both a plurality of cooling liquid distribution channels and a plurality of cooling liquid return channels alternately arranged within the conduit wall. The conduit includes a circumferential cooling liquid manifold in fluid communication with each of the cooling liquid distribution channels, a circumferential return manifold in fluid communication with each of the cooling liquid return channels, and a circumferential recirculation manifold in fluid communication with each of the cooling liquid distribution and return channels such that the cooling liquid distribution and return channels are in fluid communication through the circumferential recirculation manifold.

A welding tool comprises a main body; a handle attached to the main body to be held by a welder; an electrode attached to the main body; an adjusting device for moving the consumable electrode forward/backward with respect to the main body; a control unit is connected to the adjusting device and is configured to act on the adjusting device for maintaining a substantially constant distance between the electrode and a weld area.

Protective gas mouthpiece for a connection device, having a base member which has an axial opening and a mouth arranged around the opening and which can be placed on a workpiece on which a connection process is intended to be carried out, wherein the opening adjacent to the mouth defines a cleaning space into which protective gas can be introduced and which, when the connection process is carried out, can be axially delimited by the workpiece which covers the opening. The protective gas is introduced into the cleaning space in such a manner that a main flow direction of the protective gas in a radial centre of the cleaning space is orientated in a substantially radial and unidirectional manner.

A gas shielded arc welding method includes welding a steel sheet with a tensile strength of 780 MPa or more using a shielding gas containing Ar in an amount of 92 vol. % to 99.5 vol. %. In the gas shielded arc welding method, a value calculated from the following expression (1) is 0.20 or more: {√v/(D/2).sup.2}×10−{(100−C.sub.Ar)×I/v}×0.1 . . . (1), where C.sub.Ar represents an Ar content (vol. %) in the shielding gas, D represents an inner diameter (mm) of a nozzle from which the shielding gas is supplied, v represents a welding speed (cm/min), and I represents a welding current (A).