Provided are a dissimilar metal welded body and a method of manufacturing the same, capable of preventing galvanic corrosion in a connection portion between dissimilar metals in the dissimilar metal welded body and of sufficient insulation coating being applied even when the insulation coating is applied to the dissimilar metal welded body. The dissimilar metal welded body includes a first member made of a metal containing aluminum as a main component, a second member made of a metal containing copper as a main component, a welded portion formed by pressure-welding an end face of the first member and an end face of the second member to each other, and a metal film that continuously covers a substantially entire part of the first member and at least a part of the second member. The metal film is a film made of a metal containing copper as a main component.

A weld line data generation device generates weld line data specifying a portion to be welded by a welding robot. The weld line data generation device includes: a recording unit in which possibility information indicating possibility of welding by the welding robot is recorded for each combination of configuration names of members; an extraction unit configured to extract a combination of two or more adjacent members from three-dimensional data of a structure to be manufactured by welding; and a generation unit configured to generate, when a combination of configuration names corresponding to the extracted combination of two or more members is weldable, the weld line data specifying a portion to be welded between the two or more members corresponding to the combination

A method for training a data-based model to ascertain an energy input of a laser welding machine into a workpiece as a function of operating parameters of the laser welding machine. The training is carried out as a function of an ascertained number of spatters.

The application discloses a method of liquid cold welding (LCW) including: (a) engaging two or more porous conductive substrate layers between perforated non-conductive frames so that the substrate layers contact one another; (b) immersing the substrate layers in an electrolyte solution; and (c) applying electric current and/or voltage and/or electric power to the electrolyte solution. Apparatus suitable for performance of some embodiments of the method are also disclosed.

Provided is a metal nanowire heater and a method of fabricating the metal nanowire heater that includes providing a substrate; coating on the substrate a nanowire film containing metal nanowires that are laser-etchable; thermally joining portions of the metal nanowires to enhance connection between contact parts of the metal nanowires and provide an enhanced nanowire film by at least one unit cycle of supplying the ionic liquid onto the nanowire film and applying heat from outside to cause the ionic liquid to change its phase; and forming electrodes on the enhanced nanowire film to provide the metal nanowire heater.

Provided is a joining structure in which two joined bodies composed of metal are firmly joined together with plated metal, and a method for manufacturing the joining structure. The joining structure comprises a first joined body composed of a first metal, a second joined body composed of a second metal, and a plating portion, disposed between the first joined body and the second joined body, formed of a plating metal, and joining the first joined body and the second joined body. In the plating portion a joining interface of plating metal is formed at around equidistance from the respective joined surfaces of the first joined body and the second joined body, and the plating portion comprises, in the vicinity of the joining interface, has a recrystallization region where the plating metal has recrystallized, or a first diffusion region where the plating metal has diffused.

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.