A method comprises: providing a spiral metallic workpiece having a cast structure associated with such spiral; and at least partially flattening the workpiece.

Provided is a method of fabricating a metal nanowire heater, the method including a coating step of coating, on a substrate, a coating film containing laser-etchable and low-melting-point metal nanowires, a thermal joining step of enhancing connection between contact parts of the metal nanowires due to a chemical and physical action occurring when an ionic liquid is phase-changed, by supplying the ionic liquid onto the coating film and applying heat from outside, and an electrode forming step of forming electrodes on the coating film.

A method of fabricating airfoil cluster includes providing an airfoil cluster that has a pair of spaced-apart airfoils that extend from a common platform wall. The airfoil cluster is then divided through the common platform wall to provide separate first and second airfoil segments. At least one cooling hole is then formed in at least one of the first and second airfoil segments. The segments are then metallurgically fused together in a distinct metallurgical joint in the common platform wall.

A method of fabricating airfoil cluster includes providing an airfoil cluster that has a pair of spaced-apart airfoils that extend from a common platform wall. The airfoil cluster is then divided through the common platform wall to provide separate first and second airfoil segments. At least one cooling hole is then formed in at least one of the first and second airfoil segments. The segments are then metallurgically fused together in a distinct metallurgical joint in the common platform wall.

The present invention relates to a metallic nano structure including a plurality of metallic nano materials; and a junction locally disposed in a region where the metallic nano materials adjacent to each other among the plurality of metallic nano materials are in contact with each other in order to bond the adjacent metallic nano materials.

A pack case includes a base plate, a side plate coupled along a perimeter of the base plate to define an accommodation space therein; a lower cross beam coupled to the base plate to transversely divide the accommodation space; and an upper cross beam coupled to the lower cross beam.

A pack case includes a base plate, a side plate coupled along a perimeter of the base plate to define an accommodation space therein; a lower cross beam coupled to the base plate to transversely divide the accommodation space; and an upper cross beam coupled to the lower cross beam.

A method of joining dissimilar materials that may include a first part made of cast iron and a second part made of a metal alloy that is not made of cast iron. An insert material may be disposed between the first part and the second part. The insert material may be heated such that at least a portion of the insert material forms a transient phase liquid and bonds to the first part and the second part.

A method of joining dissimilar materials that may include a first part made of cast iron and a second part made of a metal alloy that is not made of cast iron. An insert material may be disposed between the first part and the second part. The insert material may be heated such that at least a portion of the insert material forms a transient phase liquid and bonds to the first part and the second part.

The tool for welding of a mounting bracket on a tube for a tank comprises means for gripping of the tube, which clear access to a surface on the tube which is designed to be welded, means for heating of the surface which are mobile relative to the means for gripping of the tube, between a position of heating of the surface and a retracted position, means for heating of the mounting bracket, and means for gripping of the bracket which are mobile relative to the means for heating of the bracket and relative to the means for gripping of the tube, between a position for heating of the mounting bracket and a position for welding of the mounting bracket on the surface of the tube.