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 construction of a vehicle body structure by welding thin metal sheet panels to the substantially much thicker load bearing metal extrusions to form a vehicle body structure with a smooth exterior surface suitable for automotive, aerospace, and recreational vehicle applications. A substantially thin sheet metal panel is bent at an angle to form a hem line. The thin sheet metal panel hem line is disposed adjacent to the longitudinal edge of the metal plate structure. The bent edge of the sheet metal is corner-welded along the length of the metal plate structure. The excess metal materials formed by the weld line above the surface of the sheet metal panel and the edge of the metal plate structure is removed to form a smooth corner surface of a vehicle body structure. Another sheet metal panel can be formed and welded similarly in a mirror image fashion to the other side of the metal plate to form a vehicle body structure with a large smooth exterior surface and an interior surface concealing the hem lines of the sheet metal panels from exterior view and having the load bearing structure component in the middle of the interior surface acting as both a load bearing member and a stiffener to the vehicle body structure.

Method for restoring at least one portion of a body of a valuable historic vehicle comprising the following successive steps: stripping said body portion, depositing a metal layer by hurling metal particles against said body portion so that they remain embedded therein.

A method of forming a microelectronic device structure comprises coiling a portion of a wire up and around at least one sidewall of a structure protruding from a substrate. At least one interface between an upper region of the structure and an upper region of the coiled portion of the wire is welded to form a fused region between the structure and the wire.

Stiffening beads (55A, 55B) are formed in turned portions in a region of a fillet bead (53) formed in a single stroke manner. At this time, it is set in such a manner that welding start positions of the stiffening beads (55A, 55B) are in a region near the fillet bead and do not exist independently without mixing with other weld beads.

A method of reinforcing a seatback frame of a seat assembly in which the seatback frame includes a pair of first frame members. The method includes the steps of providing a reinforcement member having an insertion end and an arm at an opposite end of the reinforcement member. The arm extends generally normal to the remainder of the reinforcement member to define a generally L-shape. An aperture is formed in one of the pair of first frame members. The insertion end of the reinforcement member is inserted into the aperture. The attachment end is aligned with the other of the pair of first frame members. The reinforcement member is welded to the seatback frame to reinforce the seatback frame.

A method of forming a microelectronic device structure comprises coiling a portion of a wire up and around at least one sidewall of a structure protruding from a substrate. At least one interface between an upper region of the structure and an upper region of the coiled portion of the wire is welded to form a fused region between the structure and the wire.

A method of forming a microelectronic device structure comprises coiling a portion of a wire up and around at least one sidewall of a structure protruding from a substrate. At least one interface between an upper region of the structure and an upper region of the coiled portion of the wire is welded to form a fused region between the structure and the wire.

A method of forming a microelectronic device structure comprises coiling a portion of a wire up and around at least one sidewall of a structure protruding from a substrate. At least one interface between an upper region of the structure and an upper region of the coiled portion of the wire is welded to form a fused region between the structure and the wire.