公开(公告)号：US20140175073A1

公开(公告)日：2014-06-26

申请号：US13831779

申请日：2013-03-15

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Masafumi MURAKAMI ,  Takahide HIRAYAMA

IPC: B23K9/09 ,  B23K9/10

CPC classification number: B23K9/092 ,  B23K9/091 ,  B23K9/095 ,  B23K9/1012 ,  B23K9/1043 ,  B23K9/173

Abstract: A power supply device for arc welding according to an embodiment includes a constrained short-circuit opening unit and a reexecuting unit. The constrained short-circuit opening unit reduces, when a change amount of a welding voltage becomes not less than a predetermined threshold while raising a welding current between a consumable electrode and a workpiece, the welding current for a predetermined time interval to execute a constrained short-circuit opening process for opening the short-circuit state. The reexecuting unit makes the constrained short-circuit opening unit reexecute the constrained short-circuit opening process after the constrained short-circuit opening process is executed.

Abstract translation: 根据实施例的用于电弧焊接的电源装置包括约束短路开启单元和重新启动单元。 受限制的短路打开单元在焊接电压的变化量变得不小于预定阈值同时提高消耗电极和工件之间的焊接电流的同时减小焊接电流达预定时间间隔以执行约束短路 电路打开过程打开短路状态。 再执行单元使受约束的短路开启单元在执行受限制的短路打开处理之后重新执行受限制的短路打开过程。