公开(公告)号：US20180207739A1

公开(公告)日：2018-07-26

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

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：US20170050269A1

公开(公告)日：2017-02-23

申请号：US15118630

申请日：2015-02-23

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： TATSUYUKI NAKAGAWA ,  YASUSHI MUKAI ,  ATSUHIRO KAWAMOTO ,  JUNJI FUJIWARA ,  NORIYUKI MATSUOKA

IPC: B23K26/244 ,  B23K26/082 ,  B23K26/06 ,  B23K26/08

CPC classification number: B23K26/244 ,  B23K26/0626 ,  B23K26/082 ,  B23K26/0876 ,  B23K26/22

Abstract: A laser welding method of the present disclosure has a first step and a second step. In the first step, a first workpiece and a second workpiece are overlaid in a first machining region. In the second step, the first workpiece and the second workpiece are irradiated with laser beam in the first machining region while the laser beam is moved in a spiral path. Moreover, in the second step, the first workpiece and the second workpiece are melted by irradiation of the laser beam to form a liquid phase portion. Furthermore, in the second step, the laser beam is moved so that the liquid phase portion is not irradiated with the laser beam again.

Abstract translation: 本公开的激光焊接方法具有第一步骤和第二步骤。 在第一步骤中，第一工件和第二工件重叠在第一加工区域中。 在第二步骤中，当激光束以螺旋路径移动时，第一加工区域中的激光束照射第一工件和第二工件。 此外，在第二工序中，第一工件和第二工件通过激光束的照射而熔化，形成液相部。 此外，在第二步骤中，激光束被移动，使得液相部分不再被激光束照射。

公开(公告)号：US20160354867A1

公开(公告)日：2016-12-08

申请号：US14891215

申请日：2015-02-24

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： NORIYUKI MATSUOKA ,  YASUSHI MUKAI ,  ATSUHIRO KAWAMOTO ,  JUNJI FUJIWARA ,  TATSUYUKI NAKAGAWA

IPC: B23K26/24 ,  B23K26/06 ,  B23K26/322 ,  B23K26/08

CPC classification number: B23K26/24 ,  B23K26/0626 ,  B23K26/082 ,  B23K26/0876 ,  B23K26/322 ,  B23K2101/34 ,  B23K2101/35 ,  B23K2103/04 ,  B23K2103/08

Abstract: A laser welding method of the present disclosure includes the step of irradiating a workpiece with a laser beam in a helical shape along a weld part of the workpiece. The helical shape is a combination of a circular trajectory in which a laser beam is moved circularly, and a movement trajectory in which the laser beam is moved in a proceeding direction along the weld part. Furthermore, first energy of the laser beam moving so as to have a component of the proceeding direction in the circular trajectory is larger than second energy of the laser beam moving so as to have a component of an opposite direction to the proceeding direction in the circular trajectory.

Abstract translation: 本公开的激光焊接方法包括沿着工件的焊接部分沿着螺旋形状的激光束照射工件的步骤。 螺旋形状是激光束循环移动的圆形轨迹和激光束沿着焊接部沿前进方向移动的移动轨迹的组合。 此外，激光束移动以使圆形轨迹中的行进方向的分量的第一能量大于激光束移动的第二能量，以便具有与循环中的行进方向相反的方向的分量 弹道。

公开(公告)号：US20150041449A1

公开(公告)日：2015-02-12

申请号：US14522909

申请日：2014-10-24

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： JUNJI FUJIWARA ,  YASUSHI MUKAI ,  ATSUHIRO KAWAMOTO

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

CPC classification number: B23K9/095 ,  B23K9/073 ,  B23K9/0732 ,  B23K9/09 ,  B23K9/124

Abstract: An arc-welding method in welding by repeating a short circuit and an arc. When the sign of opening of the short circuit is detected, the welding current is reduced from a first current value at the detection of the sign to a second current value, which is lower than the first current value. When the opening of the short circuit is detected, a pulse current having a peak value higher than the first current value is supplied at a plurality of times in the arc period. This suppresses porosities and spatters when galvanized steel sheets are welded.

Abstract translation: 通过重复短路和电弧的焊接中的电弧焊接方法。 当检测到短路开路的符号时，焊接电流在检测到符号时从第一电流值减小到低于第一电流值的第二电流值。 当检测到短路的断开时，在电弧周期内多次提供具有高于第一电流值的峰值的脉冲电流。 当镀锌钢板焊接时，这抑制了孔隙和飞溅。