A pressure welding device (1) and a pressure welding method are provided. The pressure welding device (1) includes a plastification unit (5), a positioning and compressing unit (6), a controller (26), and an advance unit (7) for a workpiece (3) and for the process axis (13). The advance unit (7) has an open- or closed-loop controllable hydraulic advance drive (12) that is formed as an open- or closed-loop controllable electro-hydraulic direct drive for the process axis (13).

A pressure welding device (1) and a pressure welding method are provided. The pressure welding device (1) includes a plastification unit (5), a positioning and compressing unit (6), a controller (26), and an advance unit (7) for a workpiece (3) and for the process axis (13). The advance unit (7) has an open- or closed-loop controllable hydraulic advance drive (12) that is formed as an open- or closed-loop controllable electro-hydraulic direct drive for the process axis (13).

According to some embodiments, a device for reducing magnetic force along a section of piping comprises a first end member comprising an opening, a second end member comprising an opening, at least one connecting member extending between the first end member and the second end member, the at least one connecting member secured to both the first and second end members, wherein the at least one connecting member defines a passageway that generally aligns with the openings of the first and second end members, and wherein the passageway and the central openings of the first and second members are sized and otherwise configured to accommodate a pipe section. The device further includes a coil configured to conduct electrical current.

According to some embodiments, a device for reducing magnetic force along a section of piping comprises a first end member comprising an opening, a second end member comprising an opening, at least one connecting member extending between the first end member and the second end member, the at least one connecting member secured to both the first and second end members, wherein the at least one connecting member defines a passageway that generally aligns with the openings of the first and second end members, and wherein the passageway and the central openings of the first and second members are sized and otherwise configured to accommodate a pipe section. The device further includes a coil configured to conduct electrical current.

Methods and apparatus to synergically control a welding-type output during a welding-type operation are disclosed. An example welding-type power supply includes a power conversion circuit configured to convert input power to welding-type power and to output the welding-type power to a welding-type torch; a communication circuit configured to receive a control signal from a remote control device during a welding-type operation; and a control circuit configured to synergically control a voltage of the welding-type power and a wire feed speed based on the control signal.

Methods and apparatus to synergically control a welding-type output during a welding-type operation are disclosed. An example welding-type power supply includes a power conversion circuit configured to convert input power to welding-type power and to output the welding-type power to a welding-type torch; a communication circuit configured to receive a control signal from a remote control device during a welding-type operation; and a control circuit configured to synergically control a voltage of the welding-type power and a wire feed speed based on the control signal.

The invention described herein generally pertains to a system and method related to reducing magnetic arc blow during a welding operation performed by a welding system. In accordance with one embodiment of the invention, a welding system including a waveform generator generates a waveform that is switched from a positive current to a negative current, while passing through zero, in a step-wise fashion to resist the magnetic field within the material (e.g., the workpiece). In accordance of another embodiment of the invention, the welding system includes a nickel flux cord welding wire.

The invention described herein generally pertains to a system and method related to reducing magnetic arc blow during a welding operation performed by a welding system. In accordance with one embodiment of the invention, a welding system including a waveform generator generates a waveform that is switched from a positive current to a negative current, while passing through zero, in a step-wise fashion to resist the magnetic field within the material (e.g., the workpiece). In accordance of another embodiment of the invention, the welding system includes a nickel flux cord welding wire.

A method of welding surface-treated members together using a welding wire includes a step of transferring a droplet detached from the wire to the members; and a step of pushing the melt pool in the direction opposite to the direction of welding in such a manner that the gas generated from the members during welding is released from the site of generation. The melt pool is pushed to expose the overlapped region of these members. The gas generated from the members is released to the exposed portion, preventing generation of pores such as blowholes, and also generation of spatters.

A method of welding surface-treated members together using a welding wire includes a step of transferring a droplet detached from the wire to the members; and a step of pushing the melt pool in the direction opposite to the direction of welding in such a manner that the gas generated from the members during welding is released from the site of generation. The melt pool is pushed to expose the overlapped region of these members. The gas generated from the members is released to the exposed portion, preventing generation of pores such as blowholes, and also generation of spatters.