The present invention employs a welded article manufacturing method comprising: a step (ST1) for supplying a first metal member E; a step (ST2) for supplying a second metal member D of which the temperature reaches the melting point earlier than the temperature of the first metal member E when the second metal membe...

Provided are a fitting member that prevents the occurrence of unbonded parts, an annular member, a bonding agent member, and a method for manufacturing the bonding agent member. In a fitting member 10, fitting projections 10p that project to the outside are provided to an outer-side surface 10s of the fitting member...

A joining device comprising: an electrode for transmitting current to an object to be joined; a current supply unit which, when voltage is applied thereto, generates a current to be supplied to the to-be-joined object; a current measuring unit which makes a measurement of the current to be supplied to the to-be-join...

A joining device provided with: a first circuit to which a primary winding of a first transformer and a first capacitor are connected; a second circuit to which a primary winding of a second transformer and a second capacitor are connected; an electrode connected to a secondary winding of the first transformer and a...

The method for manufacturing a bonded article according to the present invention includes: a step for providing a first metal member having an opening and a bonding structure; a step for providing a second metal member having a to-be-bonded structure of which an outer circumferential wall contactable with an inner c...