公开(公告)号：US12208473B2

公开(公告)日：2025-01-28

申请号：US17683296

申请日：2022-02-28

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takahiro Noguchi ,  Akira Nakagawa ,  Junji Fujiwara

IPC: B23K9/073 ,  B23K9/095 ,  B23K35/38

Abstract: An arc welding control method is for performing control in an arc period. The control includes: (i) increasing a welding current to a first current value at a first gradient and maintaining the welding current at the first current value for a first period; (ii) reducing the welding current from the first current value to a second current value at a second gradient and maintaining the welding current at the second current value for a second period; (iii) increasing the welding current from the second current value to a third current value at a third gradient; and (iv) starting to reduce the welding current from the third current value within a third period, which is shorter than the first period, after the welding current reaches the third current value.

公开(公告)号：US12220772B2

公开(公告)日：2025-02-11

申请号：US17505098

申请日：2021-10-19

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takahiro Noguchi ,  Masaru Kowa ,  Haruki Egawa ,  Akira Nakagawa ,  Junji Fujiwara

IPC: B23K9/09 ,  B23K9/073 ,  B23K9/095 ,  B23K9/10 ,  B23K9/133 ,  B23K9/16 ,  B23K35/38

Abstract: Disclosed is an arc welding control method of controlling a welding current in short-circuit arc welding of feeding a welding wire toward a base metal and alternating a short-circuit state and an arc state. The arc welding control method includes: executing, in the short-circuit state, a first increase in the welding current with a first slope, a first decrease in the welding current to a first bottom value after executing the first increase, a second increase in the welding current with a second slope after executing the first decrease, and a second decrease in the welding current to a second bottom value that is smaller than the first bottom value after executing the second increase to shift a state to the arc state.

公开(公告)号：US10807180B2

公开(公告)日：2020-10-20

申请号：US15743433

申请日：2016-08-25

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Atsuhiro Kawamoto ,  Kaito Matsui ,  Masaru Kowa ,  Takahiro Noguchi ,  Masashi Fujiwara

IPC: B23K9/073 ,  B23K9/09 ,  B23K9/095 ,  B23K9/12 ,  B23K9/173 ,  B23K103/10 ,  B23K103/04

Abstract: A base material is welded by a first welding method in a case where a welding parameter related to heat input to the base material is less than a first threshold value. The base material is welded by a second welding method in a case where the welding parameter is less than a second threshold value and is more than the first threshold value. The base material is welded by a third welding method in a case where the welding parameter is more than the second threshold value. By adjusting welding conditions regardless of the thickness of the base material, a welding method suitable for the thickness of the base material is determined to provide a welding with little spatter and no meltdown of the base material.

公开(公告)号：US10537953B2

公开(公告)日：2020-01-21

申请号：US15518496

申请日：2015-11-02

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kaito Matsui ,  Atsuhiro Kawamoto ,  Takahiro Noguchi ,  Masaru Kowa

IPC: B23K9/10 ,  B23K9/073 ,  B23K9/095

Abstract: In control applying a gradient to a command voltage value during an arc period, although stable welding can be performed even in a case where a protrusion length of a welding wire becomes long, when the disturbance such as sudden change in the protrusion length is generated, a current waveform of the arc period is undershot, the short circuit period is disturbed, and it took time to return to the stable state, and the amount of sputter generation is also increased. Therefore, it is possible to suppress a change in current such as undershoot or the like when the disturbance is generated, stabilize short circuit cycle, perform welding with a strong resistance to disturbance and a small amount of sputter generation by changing an inductance value a plurality of times during the arc period.

公开(公告)号：US12036629B2

公开(公告)日：2024-07-16

申请号：US17019623

申请日：2020-09-14

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Atsuhiro Kawamoto ,  Kaito Matsui ,  Masaru Kowa ,  Takahiro Noguchi ,  Masashi Fujiwara

IPC: B23K9/073 ,  B23K9/09 ,  B23K9/095 ,  B23K9/12 ,  B23K9/173 ,  B23K103/04 ,  B23K103/10

CPC classification number: B23K9/073 ,  B23K9/0732 ,  B23K9/09 ,  B23K9/095 ,  B23K9/124 ,  B23K9/173 ,  B23K2103/04 ,  B23K2103/10

Abstract: A base material is welded by a first welding method in a case where a welding parameter related to heat input to the base material is less than a first threshold value. The base material is welded by a second welding method in a case where the welding parameter is less than a second threshold value and is more than the first threshold value. The base material is welded by a third welding method in a case where the welding parameter is more than the second threshold value. By adjusting welding conditions regardless of the thickness of the base material, a welding method suitable for the thickness of the base material is determined to provide a welding with little spatter and no meltdown of the base material.