Panasonic Intellectual Property Management Co., Ltd.

Panasonic Corporation

Kimiya Sato

Akira Nakagawa

Yoshiaki Tanaka

Atsuhiro Kawamoto

Masaru Kowa

Hideki Ihara

Kazunori Matsumoto

Hiroki Yuzawa

Junji Fujiwara

Yasushi Mukai

Noriyuki Matsuoka

Takamichi Komatsu

An arc welding control method includes: an initial condition setting step of setting initial values of welding conditions for arc welding a base material; and a scaly bead formation step of forming a plurality of scaly beads in a predetermined welding section of the base material while moving a welding wire at a predetermined welding speed in the predetermined welding section of the base material. The welding conditions include an arc ON period and an arc OFF period, and at least one of a welding current, the predetermined welding speed, or an interval of the plurality of scaly beads. The arc welding control method further includes a welding condition change step of determining whether to change the initial value based on a predetermined finish condition for the plurality of scaly beads and changing at least one of a plurality of welding parameters to satisfy the predetermined finish condition.

Arc welding controlling method

In a method and device for performing welding, after the welding current reaches a first current value during a short circuit, the feeding of the welding wire is stopped, slowed down, or moved backward. As a result, the opening of a short circuit is urged to reduce the frequency at which welding is unnecessarily interrupted by an overcurrent protection function. This achieves high weld quality such as the absence of welding defects, and high production efficiency.

Welding device

Welding method and welding device

A welding control method alternately repeats a short circuit period, during which a welding wire and an object to be welded short-circuit, and an arc period, during which an arc is generated and discharged, to weld the object to be welded. The method compares average output voltage, which is an average of welding voltage calculated during welding, to set voltage preliminarily set, and controls a welding output current produced when an arc is generated based on the comparison result therefrom, to regulate the meltage of the wire for adjusting the arc length, which brings the short circuit cycle closer to a constant one when a disturbance (e.g. extended or shortened arc length) occurs.

Arc welding control method and arc welding control system

A welding control method for a welding device having an output characteristic with a predetermined gradient showing a relation between a welding output voltage and a welding output current. By setting a set target welding voltage that is higher than the set initial welding voltage according to a difference between the set initial welding voltage and the welding output voltage, the welding output voltage is controlled to be the set target welding voltage. Thus, a proper arc length can be achieved early by correcting the change of the arc length due to, for example, motion of the hands of a welding operator.

Method of controlling welding

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Hyogo, Japan

Kimiya Sato