A portable welding system including a main case housing a primary welding device that facilitates a welding function of the portable welding apparatus, and a modular welding component removeably attached to a bottom of the portable welding apparatus, the modular welding component comprising a component case housing a secondary welding device that supplements the primary welding device.

A welding gun includes a gun assembly including a handle having a cable receiving end and also a connecting end. The connecting end includes a tubular end fitting having female threads proximal to the connecting end, and also having an aperture adjacent the female threads. A neck assembly includes a body tube having a welding end and also a connecting end. The connecting end of the body tube is telescopically engageable with the tubular end fitting. The connecting end of the body tube includes an annular recess inwardly spaced from a terminus of the connecting end, and also includes a locking nut and male threads engageable with the female threads. The locking nut and male threads are disposed adjacent the annular recess away from the terminus. A stop is fitable in the aperture and extends into the annular recess in an assembled disposition of the gun.

A welding cable connector system having a male connector and a female connector. The male connector includes a first conductive body for conveying welding power. The male connector also includes a first sealed passageway disposed coaxially of the first conductive body for conveying shielding gas, and a first Schrader valve configured to stop flow of shielding gas when the male connector is not engaged. The female connector includes a second conductive body for conveying welding power. The female connector also includes a second sealed passageway disposed coaxially of the conductive body for conveying shielding gas, and a second Schrader valve configured to stop flow of shielding gas when the female connector is not engaged. The male and female connectors are mutually engageable to conduct welding power and shielding gas therethrough. The first and second Schrader valves seal the flow of shielding gas when the connectors are not mutually engaged.

A universal conduit assembly for a welding torch is provided that includes a conduit liner defining a proximal end portion and a distal end portion, a conduit tip secured to the proximal end portion of the conduit liner, and an interchangeable conduit stop removably secured to the conduit tip. The interchangeable conduit stop is adapted for connection to a specific OEM (Original Equipment Manufacturer) power connector.

Welding cable assemblies, welding torch assemblies, and robotic welding systems are disclosed. An example welding-type cable assembly includes: a cable configured to deliver welding-type current and an electrode wire to a welding-type torch, the cable configured to be coupled to the welding-type torch on a first end and coupled to at least one of a wire feeder or a welding-type power supply on a second end; and a spring mechanically coupled to the cable, the spring having a higher resistance to torque than the cable, and the spring configured to transfer a portion of twisting induced at a first end of the cable past a bend portion of the cable.

Disclosed are weld electrode plugs with polymeric inserts for loss-of-cooling detection, methods for making or for using such weld electrode plugs, and electric welding systems equipped with loss-of-cooling detection plugs. A disclosed loss-of-cooling detection assembly includes a plug that attaches to the weld shank of a welding system such that the plug fluidly couples to a coolant bore within the shank. The plug includes a plug body with a clearance hole extending therethrough. An insert detachably mounts to the plug such that the insert fluidly seals the clearance hole. This insert is fabricated from a polymeric material, such as a shape memory polymer, that alters a physical property, such as shape/size, of the insert responsive to changes in temperature and/or pressure of coolant fluid in the shank's bore. When this physical property is altered, the insert unseals the clearance hole causing a detectable leak of fluid from the shank.

A plug part releasably connects a liquid-cooled welding torch to a jack part arranged on a hose package, and a connecting device releasably connects a liquid-cooled welding torch to a hose package. In order to provide a connecting device which is suitable for high welding currents and use with hollow shaft robots, each welding current line on the plug part is arranged around a cooling duct, at least in the region of the front face, and the contact area of each welding current line is arranged axially offset from the orifices of the cooling ducts. On the jack part, each welding current line is arranged around a cooling duct, at least in the region of the end piece, and the contact area of each welding current line is arranged axially offset from the orifices of the cooling ducts.

The present disclosure provides a welding gun and a power coupling for a welding gun that permit rotational movement of a handle relative to a cable assembly used by the welding gun. In one aspect, a welding gun comprises; a handle; a supply tube assembly fixedly extending from a front of the handle: a cable assembly configured to supply electrical power; a rotary power connector rotatably coupled between the supply tube assembly and the cable assembly, the cable assembly rotatable with respect to the handle via the rotary power connector, wherein the rotary power connector is configured to transfer electrical power from the cable assembly to the supply tube assembly; and an actuator switch assembly electrically coupled to control wires of the cable assembly.

A welding power cable includes at least one welding power source, a welding torch, and a workpiece. The welding power cable is provided with an outer casing for protecting and insulating an electrically conductive cable, wherein the electrically conductive cable is situated within the casing. The end face of the welding power cable is provided with an electrically conductive contacting means for establishing an electrically conductive contact with the welding power source in particular, and a connection means for establishing a detachable mechanical connection, in particular between the welding power source and the welding power cable. This provides an option for connecting and disconnecting such a welding power cable to/from a welding power source in a quick and reliable manner while keeping the torsional stress on the welding power cable in the area of the connection to the welding power source.

Provided is a monitoring system for a milling facility, which includes a plurality of grinders including roll mills for grinding a material to be milled and sifting machines for sifting, according to grain size, the material to be milled as ground by the roll mills; and a plurality of pulverizers including roll mills for pulverizing the material to be milled and sifting machines for sifting, according to grain size, the material to be milled as pulverized by the roll mills. The material to be milled is milled by each of the grinders and pulverizers. A plurality of flow rate measuring devices are provided on respective flow paths for product flours discharged from the respective sifting machines in the respective grinders and pulverizers, and a monitoring device capable of monitoring presence or absence of an abnormality based on measurement results on respective flow rates of the product flours is provided.