A tool less method of connecting a welding-type power source with a cart is disclosed. In some examples, the cart may be configured to carry one or more gas bottles (and/or cylinders). In some examples, the power source housing and the cart may connect at interfacing ends and/or walls of the housing and cart. A connector, such as a clip for example, may span the interface to connect the power source housing and the cart. Catches (e.g. slots, holes, crevices, and/or protrusions) may be formed in and/or on the power supply housing and/or cart proximate to the interfacing ends and/or walls. In some examples, the catches may be aligned. In some examples, the cart and/or power source housing may include alignment surfaces to assist with alignment. The connector may engage the aligned catches to connect the welding-type power source and cart together at the interface.

Provided is an apparatus for coating a girth weld and a cutback region surrounding said girth weld, said apparatus having lateral travel at least equal to the length of the cutback region and circumferential rotational travel around the pipe. The apparatus can provide a multiple component coating accurately and safely, without the need for solvent flushing of the apparatus.

An orbital welder for welding together two pipes to be welded. The welder includes a fall brake for preventing a freefall of the welder. The welder includes a spatter shield for preventing dust from entering the outer housing and fowling sensitive machine components. The welder includes a torch assembly with manual adjustments. The welder includes an automatic lead/lag adjustment and control of that adjustment during a welding operation to automatically transition from a first weld zone to a second weld zone.

A system for carrying out operations along an annular junction portion of a pipeline is provided with: a frame comprising a C-shaped structure, which is configured to be selectively clamped about a pipeline extending along a longitudinal axis and near an annular junction portion, and at least one driving device arranged along an arc of an annular path and coupled to the structure; a support arm configured to rest on the pipeline and connected to the structure for maintaining the laying plane of the driving device substantially orthogonal to the longitudinal axis; a carriage slideably coupled to the driving device; and at least one operating device configured to carry out operations along the annular junction portion and cantilever supported by said annular segment.

A robotic welding system comprises a supporting arm for attaching to a repositionable support structure, the supporting arm comprising a first mounting portion connectable to the repositionable support structure, and a second mounting portion rotatably coupled to the first mounting portion. A yaw rotary actuator rotates the second mounting portion about a yaw axis. A welding arm comprises a third mounting portion rotatably coupled to the second mounting portion of the supporting arm. A pitch rotary actuator rotates the third mounting portion about a pitch axis generally perpendicular to the yaw axis. A roll rotary actuator rotates a torch holder shaft about a roll axis generally perpendicular to the pitch axis. The shaft has a torch mounting portion for mounting a welding torch at an end thereof. A controller is operably coupled to the actuators to cause the welding torch to execute a welding pattern.

The assembly and welding mill for production of pipes includes a tubular billet feed device with a roller table having a longitudinal axis and passing through the assembly and welding stand with radial hold-down roller beams intended for reduction of a tubular billet that travels along the roller table and a longitudinally oriented guide knife, a carriage with rollers enabling rotation of the rollers on the inner surface of the tubular billet being moved through the assembly and welding stand. On the supporting elements of assembly and welding stand there is a laser welding head or a laser-arc hybrid welding head that can travel in transverse and vertical directions and around longitudinal axis. The carriage is rigidly connected with the supporting elements of the assembly and welding stand through a vertically oriented and longitudinally directed connecting knife. The guide knife is intended for tubular billet positioning through opening of edges at 12 o'clock position and is mounted on the supporting elements of the assembly and welding stand configured to enable vertical travel and fixation. On the carriage, there is a hold-down roller facing upwards that can travel in vertical direction to act on the edges of tubular billet from the inner side, while one of the roller beams is installed vertically that can act on the tubular billet edges from the outer side. Technical result: application of a root weld with laser technologies with guaranteed alignment of tubular billet edges regardless of size.

The present disclosure provides a method of all-position plasma welding process for titanium alloy pipeline, which may be used for welding a titanium alloy pipeline made of TA2 or TC4, with a wall thickness of 3˜16 mm, and a pipe diameter of 108 mm or more. When the wall thickness is 3˜9 mm, a keyhole type technology may be used for one-time welding formation, and when the wall thickness is 9˜16 mm, grooving treatment needs to be performed for the pipeline, and the keyhole type technology is used for backing welding, and then filling welding and covering welding are performed using filler wire welding through a melt-in technology. The method includes following steps: S1: performing pre-welding treatment for the pipeline; S2: clamping the pipeline; S3: setting welding parameters; S4: starting the welding.

A wire feeder includes an exterior housing and in interior housing that creates an interstitial spaced that is disposed between the exterior and interior housing. This housing structure reduces weight of the wire feeder while maintaining the structural rigidness required of a wire feeder. This housing structure also promotes improved cooling features for the wire feeder and the components disposed within the wire feeder. The exterior housing may be constructed of a materials that reduces the likelihood of being damaged. The wire feeder may be further equipped with a strain relief device for the incoming supply cables, and an interchangeable cable connector. The wire feeder may also be equipped with removable wire guides for the wire feeder mechanism that are toolless. The wire feeder may be equipped with accessory storage and attachment features, as well as a cost reduced repositionable control panel.

A tool less method of connecting a welding-type power source with a cart is disclosed. In some examples, the cart may be configured to carry one or more gas bottles (and/or cylinders). In some examples, the power source housing and the cart may connect at interfacing ends and/or walls of the housing and cart. A connector, such as a clip for example, may span the interface to connect the power source housing and the cart. Catches (e.g. slots, holes, crevices, and/or protrusions) may be formed in and/or on the power supply housing and/or cart proximate to the interfacing ends and/or walls. In some examples, the catches may be aligned. In some examples, the cart and/or power source housing may include alignment surfaces to assist with alignment. The connector may engage the aligned catches to connect the welding-type power source and cart together at the interface.

The axle welder can be easily configured and adjusted to accommodate axle assemblies of varying axle shaft lengths, hub styles (“straight” and “drop axle”) and lug bolt configurations. The axle welder uses a sliding carriage that slides along the support frame at one end of the welder to accommodate differing shaft lengths. The axle welder also includes a pair of pivoting hub lifts that accommodate both straight and drop axle style axle hubs using modular mounting plates. Modular mounting plates (“hub adaptors”) fitted to the hub lifts accommodate hub assemblies with differing lug bolt patterns. The axle welder is built on a rectangular frame that supports a pair of weld units and articulated electrode arms. The axle welder also includes a pair axle supports for carrying the axle shafts within the support frame. A shaft drive pivotally mounted to the support frame lowers to engage and rotate the axle shaft and hub assemblies in unison during the welding process.