Abrégé

Provided is a welding control device capable of improving production efficiency and welding quality. One aspect of the present disclosure provides a welding control device used for a resistance welding machine comprising: a first electrode and a second electrode; a support part that supports the second electrode; a motor that moves the first electrode relative to the second electrode; and an encoder that outputs the amount of rotation of the motor. The welding control device comprises: a strain sensor that measures the strain of the support part; and a control unit that controls the resistance welding machine. The control unit has: a displacement amount detection unit that detects, during the execution of welding by the resistance welding machine, the amount of displacement of an inter-electrode distance between the first electrode and the second electrode on the basis of the amount of rotation of the motor output by the encoder and the strain of the support part output by the strain sensor; and an adjustment unit that adjusts, during the execution of the welding, a welding current of the resistance welding machine on the basis of the amount of the displacement.

Classes IPC  ?

• B23K 11/11 - Soudage par points
• B23K 11/24 - Circuits d'alimentation ou de commande appropriés

Abrégé

A resistance spot welded joint of an aluminum material is obtained by joining a stack of a plurality of aluminum materials by spot welding. A nugget formed by the spot welding includes a solidified part of the aluminum materials and a shell having a different solidification structure from the solidified part. The shell is formed annularly in a cross-section of the nugget in a stacking direction of the aluminum materials. The solidified part and the shell are alternately arranged from an outer edge of the nugget toward a nugget central part.

Classes IPC  ?

• B23K 11/11 - Soudage par points
• B23K 11/24 - Circuits d'alimentation ou de commande appropriés

Abrégé

A plurality of aluminum members are overlaid on each other and placed between spot welding electrodes. A primary current conduction process for forming a nugget between the aluminum members between the electrodes is carried out, after which a pulsation current conduction process constituted by multiple iterations of current conduction between the electrodes and stopping current conduction is carried out. The pulsation current conduction current value is higher than the primary current conduction current value. The pulsation current conduction process is constituted by three or more iterations of current conduction and stopping current conduction, and the time during which current conduction is stopped increases gradually from the first half of the pulsation current conduction process to the second half.

Classes IPC  ?

• B23K 11/18 - Soudage par résistance tenant compte des propriétés du métal à souder de métaux non ferreux
• B23K 11/11 - Soudage par points
• B23K 11/24 - Circuits d'alimentation ou de commande appropriés

Abrégé

112211222, respectively.

Classes IPC  ?

• B23K 11/18 - Soudage par résistance tenant compte des propriétés du métal à souder de métaux non ferreux
• B23K 11/11 - Soudage par points
• B23K 11/24 - Circuits d'alimentation ou de commande appropriés

Abrégé

This resistance spot welding joint for aluminum members is obtained by joining overlapped aluminum sheets with each other by spot welding. A nugget formed by the spot welding includes solidified parts of the aluminum members and shells having solidification structures different from those of the solidified parts. The shells are each formed in an annular shape in a cross section in the overlapping direction of the aluminum members in the nugget. The solidified parts and the shells are arranged alternately from the outer edge part of the nugget toward the center part of the nugget.

Classes IPC  ?

• B23K 11/18 - Soudage par résistance tenant compte des propriétés du métal à souder de métaux non ferreux
• B23K 11/11 - Soudage par points
• B23K 11/24 - Circuits d'alimentation ou de commande appropriés

Produits et services

Electric welding machines and their parts therefor; Electric welding apparatus and its parts therefor; Electrodes for welding machines; Resistance welding guns; Machines for repairing and forming resistance welding electrodes Inverters for electric welding apparatus; Voltage and power controllers for electric welding apparatus; Power supplies for electric welding apparatus; Voltage and power measuring apparatus, namely, ammeters and voltmeters for electric welding apparatus; Electric welding transformers; Electronic controllers for electric welding apparatus; Electrical cables for electric welding machines; Electrical cables for electric welding apparatuses; Electrical cables for controllers for electric welding apparatuses

Produits et services

(1) Electric welding machines and their parts; electric cables for electric welding machines; cables for controllers for electric welding machines; power cables for electric welding machines; control cables for electric welding machines; electrodes for electric welding machines; controllers for electric welding apparatus; electric welding transformers; resistance welding guns; repairing and forming machines for resistance welding electrodes (2) Inverters for electric welding apparatus; voltage and power controllers for electric welding apparatus; power sources for electric welding apparatus; voltage and power measuring apparatus for electric welding apparatus

Produits et services

welding equipment;, namely, welding controllers, ammeters, inverter type transformers for welding machines [, harness checkers, image processors, and welding robot controllers ]

Produits et services

welding equipment; namely, welding controllers, ammeters, inverter type transformers for welding machines, harness checkers, image processors, and welding robot controllers