A welding hand support device of the present disclosure has a body that has a first base and a second base. The body has a first opening on one side and on an opposing side has a second opening. Further, the welding hand support device has a channel formed in the body traversing the body from the first opening to the second opening, the channel configured to receive a welding device.

An ergonomic method for a composite floor structure with metal decking having ribs and flat sections with openings in the flat sections over the center of the I-beams for fastening and flattening the decking on the I-beams, removing contaminates from the I-beams through the openings to form a clean welding zone and welding studs in the clean welding zones. Tools for fastening, removing contaminates and welding are carried by carts having a bottom frame with rollers and an outrigger that keeps a working end of the tool perpendicular to the composite floor structure. In operation as the carts are rolled over the metal decking the rollers contact the ribs while other rollers extend over and free from contacting the flat sections. The carts have a tool balancer to minimize the effort required of a worker to raise and lower the tool into working position from an upright position.

An ergonomic welding arm (1) includes a plurality of arm links (14, 20, 24) coupled by a plurality of joints (12, 18, 22). Each of the plurality of joints (12, 18, 22) is configured to allow the plurality of arm links (14, 20, 24) to be rotated about an axis with respect to a directly adjacent arm link (14, 20, 24). A first end of the welding arm (1) is configured to engage a support (4) for supporting the welding arm (1). A second end of the welding arm (1) is configured to engage a welding torch (10).

An example welding torch includes a torch head, a torch handle including conductive tubing electrically and mechanically connected to the torch head at a first end of the conductive tubing, one or more welding power conductors, a gas conductor, and one or more coolant lines directly connected to a second end of the conductive tubing, and a casing configured to cover the one or more welding power conductors. An example welding torch includes a torch head configured to conduct welding-type power, a torch handle including conductive tubing coupled to the torch head, and a torch cable integrally coupled to the torch handle at a first end of the torch cable, the torch cable and the torch handle including an electrical path from a power supply connector to the torch head and a coolant path to cool the torch head.

A welding sled, comprising a support base comprising one or more attachment points for attachment of a wire supply support and attachment of a wire drive assembly; a plurality of rollers coupled to a bottom of the support base; and a brake configured to selectively brake the welding sled.

Disclosed is a portable spot welder. The spot welder includes a control board; a battery connected to the control board; an analog-to-digital converter (ADC) detection module connected to the control board; a power metal oxide semiconductor (MOS) module connected to the battery; an optical-coupler isolation driving module connected to the power MOS module and the control board; a battery protection module connected to the battery and the control board; a power supply module connected to the battery protection module and the control board; and a soldering iron module connected to the battery protection module and provided with spot welding pen interfaces. The spot welder can be connected to an external spot welding pen for use or used as an emergency power bank. A safety coefficient is improved, risks of overheating, overcurrent and a short circuit of a portable spot welder body are reduced, and a size is reduced.

A mobile welding cart designed to incorporate and integrate components to lift the welding unit, and to provide power for accessory components and tools, is provided. The cart comprises a base frame, supported by four wheels, connected to a lifting platform by way of a scissor lift mechanism. The lifting platform is operable between an expanded position and a retracted position. A storage compartment is located on the lifting platform and a welder is located on top of the storage compartment. The cart also includes a power box connected directly to the rear of the storage compartment that is designed to receive power from a single extension cord connected to the input power of choice. This power box may provide power to all required components and may be equipped with components to convert the power emanating from a power supply in the power box.

A welding sled, comprising a support base comprising one or more attachment points for attachment of a wire supply support and attachment of a wire drive assembly; a plurality of rollers coupled to a bottom of the support base; and a brake configured to selectively brake the welding sled.

A torch support and guide apparatus for a plasma cutting torch, for assisting a user in beveling workpiece edges and in sectioning workpieces. The apparatus includes a main support body having a base plate and a pair of support arms extending upwardly from the base plate, the arms configured to support a handle therebetween. The base plate has a cutout notch formed therein to accommodate a clamp subassembly which includes a U-shaped swing member and a clamping bracket. The base plate has a substantially rectangular shape, and has a horizontally extending groove formed in an upper surface thereof. The apparatus also includes a fence with a guide portion and a slide arm integrally attached to the guide portion. The slide arm of the fence fits slidably in the groove of the base plate. A kit for constructing the apparatus and a method of using the apparatus are also disclosed.

Systems and methods for laser welding are disclosed. A laser welding system includes a handheld or robotic laser welding tool to direct laser power to a workpiece to generate a weld during a laser welding operation. The welding system includes a wobble generator (e.g., a beam wobble optic, a wire guide optic, and/or a mechanical controller/oscillator) to move the laser beam and/or the wire as applied to the workpiece.