公开(公告)号：US20220055136A1

公开(公告)日：2022-02-24

申请号：US17520774

申请日：2021-11-08

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： NORIYUKI MATSUOKA ,  SHUN SATOU ,  MASARU KOWA ,  AKIRA NAKAGAWA ,  JUNJI FUJIWARA

IPC: B23K9/073 ,  B23K9/12 ,  B23K9/09 ,  B23K9/095

Abstract: In arc welding in which a welding wire serving as a consumable electrode is fed toward a base material and a welding current is caused to flow through the welding wire and the base material to alternately repeat a reverse polarity period and a positive polarity period, after a short circuit between the welding wire and the base material is detected, a feeding speed of the welding wire is changed from a first feeding speed to a second feeding speed on a negative side of the first feeding speed when a speed in a direction toward the base material is defined as positive.

公开(公告)号：US20220055135A1

公开(公告)日：2022-02-24

申请号：US17520770

申请日：2021-11-08

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： SHUN SATOU ,  NORIYUKI MATSUOKA ,  MASARU KOWA ,  AKIRA NAKAGAWA ,  JUNJI FUJIWARA

IPC: B23K9/073 ,  B23K9/12 ,  B23K9/09 ,  B23K9/095

Abstract: Provided is an arc welding device that performs welding by alternately repeating a short-circuit period provided with a short-circuit state in which a welding wire and a base material are short-circuited, and an arc period provided with an arc state in which an arc is generated between the welding wire and the base material. A calculation unit calculates an integrated power value by integrating power supplied to the welding wire within a predetermined period, after the welding wire is short-circuited. A controller reduces a welding current to be supplied to welding wire when the integrated power value is larger than a predetermined threshold.

公开(公告)号：US20220055134A1

公开(公告)日：2022-02-24

申请号：US17520767

申请日：2021-11-08

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： NORIYUKI MATSUOKA ,  SHUN SATOU ,  MASARU KOWA ,  AKIRA NAKAGAWA ,  JUNJI FUJIWARA

IPC: B23K9/073 ,  B23K9/12 ,  B23K9/09 ,  B23K9/095

Abstract: Arc welding, in which a welding wire serving as a consumable electrode is fed toward a base material and a welding current alternately including a peak current and a base current is caused to flow through the welding wire and the base material, is performed such that after a short-circuit between the welding wire and the base material is detected, a feeding speed of the welding wire is changed from a first feeding speed to a second feeding speed that is on a negative side from the first feeding speed when a speed in a direction in which the welding wire is fed toward the base material is defined as positive.