A combined extraction/shielding gas nozzle (10) of an arc welding torch with a consumable electrode has a shielding gas channel (1) for supplying shielding gas to the welding process and has an extraction device (3) with at least one extraction channel (6) with an extraction opening (7) for extracting the flue gas produced during the welding process. The shielding gas channel (1) and the at least one extraction channel (6) are disposed radially and offset to one another in the axial direction such that the extraction opening (7) for the at least one extraction channel (6) lies behind the shielding gas channel (1) in the direction of flow of the flue gas.

Through the present invention, the load of a torch (16) applied to a welding workpiece (W) in a touch start method is reduced, and stability is significantly enhanced. A welding head (10) has a rigid straight-advancing movable part (12), an elevator drive tower (14) for moving the straight-advancing movable part (12) straight forward in the vertical direction, and a torch (16) mounted on the straight-advancing movable part (12) so as to be able to move in the vertical direction. One end part of a balance arm (28) rotatably attached to a multi-purpose support part (22) of the straight-advancing movable part (12) is connected to a torch body (30), and a balance weight (98) is attached to the other end part of the balance arm (28).

A removable hood for a fume extractor comprises a shield defining an internal cavity and having one or more vent openings in an upper portion, a welding opening in a rear portion, one or more viewing openings in one or more sides, and a pipe opening in a bottom portion of the shield. The pipe opening comprises arcuate portions on either side thereof for placement adjacent to a pipe. The hood also comprises a removable attachment mechanism on the upper portion of the shield configured to selectively couple the one or more vent openings to an extraction arm of the fume extractor, one or more layers of window material coupled to the shield to cover each of the one or more viewing openings, and one or more internal airflow spaces shaped to direct air flow to cool the window material when suction is applied to the vent openings.

A system includes a fume collection system that collects fumes from a welding operation, multiple data sources that detect operational data of the fume collection system and/or of the welding operation indicative of at least two of arc on time, operator factor, electrode feed speed, electrode size, and electrode type, an analysis system that analyzes the operational data and estimates fume data indicative of amount and content of the fumes, and a reporting system configured to populate at least one user viewable electronic report based upon the fume data.

A method and apparatus for providing a welding type power is disclosed. It includes an outer housing having a wind tunnel within the outer housing. Air flows through the wind tunnel in an air flow direction. The width of the tunnel is less at one location than at another location. Electrical components receive power and provide a welding type output. A first group of those components require air flow for cooling, and are disposed at least partially in the wind tunnel. A second group of components are not disposed in the wind tunnel. The wind tunnel can also change direction.

Various welding chambers are disclosed herein. A welding chamber body has a glove tube attached to its sidewall. A windowed hood structure is attached to the welding chamber body using a hinge assembly. A manifold assembly has a main branch and perforated secondary branches. A cross sectional area of the main branch is greater than a second cross sectional area of one of the secondary branches.

A system to prevent a flow of gas and particulates from spreading to atmosphere during a material processing operation includes a slag deflector disposed proximate a torch during the material processing operation. The slag deflector includes a thermally-conductive base portion having an impact surface facing the torch. The impact surface is shaped to prevent the flow of gas and particulates from the material processing operation from spreading in a direction away from the torch, and to redirect the first flow of particulates to a surface configured to inhibit the first flow of particulates from flowing to atmosphere. The slag deflector includes a coolant flow channel configured to thermally-regulate the impact surface of the thermally conductive base portion.

A welding system includes a gas line coupled to components of the welding system and a first gas line transducer coupled to the gas line. The gas line is configured to convey a gas between components of the welding system. The first gas line transducer is configured to communicate via radio signals transmitted through the gas line.

A welding torch (100) for arc welding in a shielding gas atmosphere, includes: a contact tip (25) for feeding a welding wire (13); a suction nozzle (23) surrounding the welding wire, and sucking a gas from a space between the suction nozzle (23) and the welding wire; and a shielding gas supply nozzle (21) provided on the outer periphery of the suction nozzle (23), and supplying the shielding gas toward a welded portion from a space between the shielding gas supply nozzle (21) and the suction nozzle (23). The welding torch (100) satisfies 7Ltk17 and 0Lts18, where Lts [mm] is a distance between the tip of the contact tip (25) and the tip of the shielding gas supply nozzle (21), and Ltk [mm] is a distance between the tip of the contact tip (25) and the tip of the suction nozzle (23).

Provided is a welding method using a special torch and a flux cored wire, in which the special torch has a suction nozzle between the contact tip and the shield nozzle, and the flux cored wire has a flux filled inside the steel outer casing, and a seam portion where both ends of a metal in a width direction of the steel outer casing are butted or overlapped in a longitudinal direction of the flux cored wire.