A method for attaching a metal ring (4) in a bore (3) of a frame (2) made of a different metal, wherein: the ring (4) is set in the bore (3) by way of high-energy forming suitable for urging an outer surface of the ring against the bore (3) with a speed capable of driving out any impurity from an interface between the ring and the frame; the interface between the ring (4) and the frame (2) is heated to a temperature and for a length of time that are determined in accordance with the respective materials of the ring and the frame such as to obtain diffusion welding between the outer surface of the ring and the bore. A single-turn coil for magnetic forming carried out by the method is also described.

According to one or more embodiments, a vehicle seat assembly includes a cushion and a leather trim cover assembly disposed over the cushion. The leather trim cover assembly includes a leather upper layer and a foundation layer secured to the leather upper layer at radio-frequency weld points. The radio-frequency weld points define at least one design boundary adjacent a raised portion of a protruding design in the leather trim cover assembly.

An apparatus for manufacturing electric resistance welded pipe, in which two across-opening-facing end parts (2a, 2b) of an open pipe (1) including an opening (2) extending in a running direction are melted by an induction current generated by an induction heating means and joined together at a join portion. The induction heating means includes a first induction coil (3), and the first induction coil (3) is disposed above the opening (2) so as not to encircle the outer circumference of the open pipe (1) and so that a primary current circuit is formed straddling the opening (2).

A method of manufacturing a tubular member for an automotive application that includes providing a flat workpiece of a material; forming at least one lance in the flat workpiece; roll-forming the flat workpiece into a tubular configuration; induction welding a seam of the tubular workpiece after the roll-forming; and trimming the tubular workpiece through the lance after welding the seam.

A method of manufacturing a tubular member for an automotive application that includes providing a flat workpiece of a material; forming at least one lance in the flat workpiece; roll-forming the flat workpiece into a tubular configuration; induction welding a seam of the tubular workpiece after the roll-forming; and trimming the tubular workpiece through the lance after welding the seam.

Provided are an electric resistance welded stainless clad steel manufactured by forming a hot-rolled steel strip of clad steel including low-carbon low-alloy steel and stainless steel into a cylindrical shape, and electric resistance welding the edges of the hot-rolled steel strip, characterized in that the flattening characteristic of an electric resistance weld, as-welded, satisfies the formula h/D<0.3, wherein h is the flattened height at fracture (mm) and D is the outer diameter of the pipe (mm), and a method of manufacturing the same.

A bonding apparatus includes a support member configured to support a first substrate of a display panel and a connecting member, a bonding unit located above the support member and configured to compress the first substrate and the connecting member against each other using a bonding head to which a heating member is attached, and a magnetic-field generating part configured to generate a magnetic field to heat the heating member in an electromagnetic induction method.

A bonding apparatus includes a support member configured to support a first substrate of a display panel and a connecting member, a bonding unit located above the support member and configured to compress the first substrate and the connecting member against each other using a bonding head to which a heating member is attached, and a magnetic-field generating part configured to generate a magnetic field to heat the heating member in an electromagnetic induction method.

A method of monitoring a manufacturing status of an electric resistance welded pipe manufactured by shaping a steel strip into a pipe and butt welding both end parts of the steel strip in a width direction along a lengthwise direction includes: arranging an imaging unit in a gas shield nozzle having an opening opposing a region in which both of the end parts of the steel strip in the width direction are butt welded and shielding the region with inert gas by ejecting the inert gas onto the region through the opening, the imaging unit having a visual filed including the region; and determining quality of a butt-welded part based on an image shot by the imaging unit.

A solenoidal induction coil with dynamically variable coil geometry is provided for inductively welding or heating continuous or discontinuous workpieces passing through the solenoidal induction coil in a process line. The coil geometry can change, for example, as the outer dimension of the workpiece passing through the solenoidal induction coil changes or as non-continuous workpieces pass through the solenoidal induction coil in an induction heating or welding process line.