A system for manufacturing a drive shaft assembly comprises a welding apparatus configured to weld a tube to an end fitting to form the drive shaft assembly having an annular weld. A transport apparatus is configured to transport the drive shaft assembly away from the welding apparatus. A knurling apparatus receives the drive shaft assembly from the transport apparatus. The knurling apparatus is configured to knurl the weld of the drive shaft assembly. The knurling apparatus includes a pair of knurling plates having textured surfaces in facing relationship. One of the knurling plates is configured to move relative to the other of the knurling plates to roll the drive shaft assembly between the textured surfaces, thereby knurling the weld to improve an appearance and texture of the outer surface of the drive shaft assembly.

A system for manufacturing a drive shaft assembly comprises a welding apparatus configured to weld a tube to an end fitting to form the drive shaft assembly having an annular weld. A transport apparatus is configured to transport the drive shaft assembly away from the welding apparatus. A knurling apparatus receives the drive shaft assembly from the transport apparatus. The knurling apparatus is configured to knurl the weld of the drive shaft assembly. The knurling apparatus includes a pair of knurling plates having textured surfaces in facing relationship. One of the knurling plates is configured to move relative to the other of the knurling plates to roll the drive shaft assembly between the textured surfaces, thereby knurling the weld to improve an appearance and texture of the outer surface of the drive shaft assembly.

A directing apparatus for orienting an arc of an arc welding device for arc welding, in particular for TIG welding, using a magnetically moved arc, comprising: a retaining device having an opening for receiving a welding head of the arc welding device; one or more solenoid coils for forming a magnetic field for deflecting an arc generated by a welding device in the opening; and at least two bent pole shoes comprising at least two legs for focusing the magnetic field, a first of the legs of each pole shoe being affixed to the retaining device and/or to the solenoid coil and a second of the legs being oriented at an angle of less than 130° to the first leg.

A directing apparatus for orienting an arc of an arc welding device for arc welding, in particular for TIG welding, using a magnetically moved arc, comprising: a retaining device having an opening for receiving a welding head of the arc welding device; one or more solenoid coils for forming a magnetic field for deflecting an arc generated by a welding device in the opening; and at least two bent pole shoes comprising at least two legs for focusing the magnetic field, a first of the legs of each pole shoe being affixed to the retaining device and/or to the solenoid coil and a second of the legs being oriented at an angle of less than 130° to the first leg.

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.

A non-magnetic member, a first magnetic member and a second magnetic member are prepared. The first magnetic member and the second magnetic member are connected to the non-magnetic member. Then, a first bonding portion which bonds the non-magnetic member and the first magnetic member to each other, and a second bonding portion which bonds the non-magnetic member and the second magnetic member to each other are formed. A hot isostatic pressing process is performed to the non-magnetic member, the first magnetic member and the second magnetic member to establish diffusion-bond. Thereafter, the non-magnetic member, the first magnetic member and the second magnetic member are hollowed, and the first bonding portion and the second bonding portion are removed. Thereafter, the non-magnetic member becomes a non-magnetic body, the first magnetic member becomes a first magnetic body, the second magnetic member becomes a second magnetic body and a sleeve is obtained.

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.

A pressure welding method and to a pressure welding device (1) are provided. The pressure welding device (1) includes a plastification device (7), an upsetting device (8) and component mountings (34, 35, 36, 37) for the components (2, 3, 3′, 4) to be welded together and a machine frame (12). The pressure welding device (1) includes a machine head (13) which is arranged so as to move on the machine frame (12). The machine head (13) includes a rotatable spindle (54) and a component mounting element (34, 35) as well as an associated spindle drive (56). The machine head (13, 14) and the spindle drive (56) are separated from each other on the machine frame (12). A controllable mass decoupling (79) including an axially tolerant coupling (80), is arranged in the drive train (57) between the fixed or moveable spindle drive (56) arranged on the machine frame (12).