公开(公告)号：US12090580B2

公开(公告)日：2024-09-17

申请号：US16583279

申请日：2019-09-26

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Masafumi Murakami ,  Fuminori Inagaki

IPC: B23K9/09 ,  B23K9/29

CPC classification number: B23K9/092 ,  B23K9/295

Abstract: A welding apparatus includes a welding power source configured to output current between a consumable electrode and a workpiece; and circuitry. The circuitry is configured to control the welding power source to repeat a sequence including: outputting a positive peak current from the workpiece to the consumable electrode during a positive peak period; outputting a positive base current from the workpiece to the consumable electrode and subsequently outputting a negative base current from the consumable electrode to the workpiece during a first base period, an absolute value of the positive base current and the negative base current being less than the positive peak current; and outputting a negative peak current from the consumable electrode to the workpiece during a negative peak period following the first base period, an absolute value of the negative peak current being greater than the absolute value of the positive base current and the negative base current.

公开(公告)号：US11478871B2

公开(公告)日：2022-10-25

申请号：US16583278

申请日：2019-09-26

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Masafumi Murakami ,  Fuminori Inagaki

IPC: B23K9/095 ,  B23K9/09 ,  B23K9/10 ,  B23K9/12 ,  G05B19/18

Abstract: An example welding apparatus includes a welding power source configured to output current between a consumable electrode and a workpiece; a feeding apparatus configured to move the consumable electrode toward the workpiece; and circuitry. The circuitry is configured to: control the welding power source to repeat a sequence including: outputting a positive peak current from the workpiece to the consumable electrode during a positive peak period; outputting a first base current between the consumable electrode and the workpiece during a first base period following the positive peak period, an absolute value of the first base current being less than the positive peak current; and outputting a negative peak current from the consumable electrode to the workpiece during a negative peak period following the first base period, an absolute value of the negative peak current being greater than the absolute value of the first base current. The circuitry is further configured to control the feeding apparatus to move the consumable electrode close to the workpiece so as to temporarily short circuit the consumable electrode and the workpiece during the first base period.