A system and method of welding or additive manufacturing is provided where at least two welding electrodes are provided to and passed through a two separate orifices on a single contact tip and a welding waveform is provided to the electrodes through the contact tip to weld simultaneously with both electrodes, where a bridge droplet is formed between the electrodes and then transferred to the puddle.

Provided is a manufacturing method for a joint body having a blank material plated with a metal material and a hoop material plated with a metal material joined together by placing the hoop material on the blank material and causing a laser oscillation system to irradiate a surface of the hoop material with laser light to form a joint portion including a line-shaped welded portion where the blank material and the hoop material are joined together. In this manufacturing method, the hoop material is supplied to be placed on the blank material and form a predetermined gap d between the blank material and the hoop material, and the hoop material is irradiated with a laser at a position where the predetermined gap d is located between the blank material and the hoop material to join the blank material and the hoop material together by laser welding.

Provided is a manufacturing method for a joint body having a blank material plated with a metal material and a hoop material plated with a metal material joined together by placing the hoop material on the blank material and causing a laser oscillation system to irradiate a surface of the hoop material with laser light to form a joint portion including a line-shaped welded portion where the blank material and the hoop material are joined together. In this manufacturing method, the hoop material is supplied to be placed on the blank material and form a predetermined gap d between the blank material and the hoop material, and the hoop material is irradiated with a laser at a position where the predetermined gap d is located between the blank material and the hoop material to join the blank material and the hoop material together by laser welding.

A first member and a second member are formed of metal materials of the same type and a third member is formed of a material of a different type that is difficult to weld to the first member and the second member. The first member and the second member are laser welded to each other such that respective regions of the first member and the second member which correspond to the spacer are welded via a through hole with the third member interposed therebetween. The spacer is formed of a filler material jointed to the second member by arc welding and is formed such that a central portion protrudes toward the first member more than an outer peripheral portion.

A first member and a second member are formed of metal materials of the same type and a third member is formed of a material of a different type that is difficult to weld to the first member and the second member. The first member and the second member are laser welded to each other such that respective regions of the first member and the second member which correspond to the spacer are welded via a through hole with the third member interposed therebetween. The spacer is formed of a filler material jointed to the second member by arc welding and is formed such that a central portion protrudes toward the first member more than an outer peripheral portion.

A tack welding method and a tack welding apparatus that can improve the strength of a tack-welded joint portion and reduce the height of a reinforcement bead is provided. A tack welding method of the present embodiment is a tack welding method of tack-welding a part of a joint portion of a first joint and a second joint at a predetermined interval before main welding. In the tack welding method, a filler metal is supplied to the joint portion, laser light is deflected and irradiated to the joint portion, and the filler metal is cut with the laser light to be welded to the joint portion.

A tack welding method and a tack welding apparatus that can improve the strength of a tack-welded joint portion and reduce the height of a reinforcement bead is provided. A tack welding method of the present embodiment is a tack welding method of tack-welding a part of a joint portion of a first joint and a second joint at a predetermined interval before main welding. In the tack welding method, a filler metal is supplied to the joint portion, laser light is deflected and irradiated to the joint portion, and the filler metal is cut with the laser light to be welded to the joint portion.

A mask plate, a method for fabricating the mask plate, and an evaporation device are disclosed. The mask plate comprises a mask frame and a mask strip. The mask frame comprises a transition layer on a first surface of the mask frame, and the mask strip is welded to the mask frame through the transition layer. In particular, a material of the transition layer is the same as that of the mask strip.

A method connects at least two components made of different materials by thermal joining. The two components include a first component made of a material that is suitable for thermal joining and a second component made of a material that cannot be processed using the thermal joining method of the first component. The method includes introducing an auxiliary joining part into the second component forming a form-locking connection and/or a force locking connection. The auxiliary joining part of is made of a material that can be thermally joined to the first component. The first component is thermally joined to the auxiliary joining part in the second component so as to produce a connection between the first component and the second component. The thermal joining is carried out by a beam welding method.

A method connects at least two components made of different materials by thermal joining. The two components include a first component made of a material that is suitable for thermal joining and a second component made of a material that cannot be processed using the thermal joining method of the first component. The method includes introducing an auxiliary joining part into the second component forming a form-locking connection and/or a force locking connection. The auxiliary joining part of is made of a material that can be thermally joined to the first component. The first component is thermally joined to the auxiliary joining part in the second component so as to produce a connection between the first component and the second component. The thermal joining is carried out by a beam welding method.