公开(公告)号：US20190270156A1

公开(公告)日：2019-09-05

申请号：US16338129

申请日：2017-10-10

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Junji FUJIWARA ,  Yuya FURUYAMA

IPC: B23K9/073 ,  B23K9/12 ,  B23K9/09 ,  B23K9/10

Abstract: An arc welding method alternately generates a short-circuit state and an arc state. In the method, short circuits are generated also in the arc period. This more than doubles the total number of short circuits, which is the sum of the short circuits generated in the short circuit period and those generated in the arc period. This enables a thin plate to be arc welded at a higher speed, while reducing its burn-through.

公开(公告)号：US20210031293A1

公开(公告)日：2021-02-04

申请号：US17072859

申请日：2020-10-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yuya FURUYAMA ,  Junji FUJIWARA

IPC: B23K9/173 ,  B23K9/23 ,  B23K9/12 ,  B23K9/095 ,  B23K35/38

Abstract: Forward feeding for feeding a welding wire in a direction of a workpiece and backward feeding for feeding in an opposite direction to the forward feeding are alternately performed, and the welding wire is fed at a wire feeding speed cyclically changed in a predetermined cycle and at a predetermined amplitude to perform welding by repeating an arc period and a short-circuit period. Provided during forward feeding, stopping feeding of the welding wire from a time of an elapse of a half cycle of a change of the wire feeding speed to an elapse of a first feeding stop period, and feeding the welding wire forward at a first feeding speed from an elapse of the first feeding stop period to an elapse of a predetermined period. The welding wire is fed backward after the elapse of the predetermined period.