公开(公告)号：EP2500114B1

公开(公告)日：2015-10-14

申请号：EP09851110.8

申请日：2009-11-09

申请人： Primetals Technologies Japan, Ltd.

发明人： KAGA, Shinichi ,  ONOSE, Mitsuru ,  TOMINAGA, Noriaki ,  SAITO, Takehiko ,  YOSHIMURA, Yasutsugu ,  MASUDA, Toyotsugu ,  MAENO, Ichirou

IPC分类号： B21B1/36 ,  B21B15/00 ,  B21B37/18 ,  B21B37/32 ,  B21B37/38 ,  B21B41/00

CPC分类号： B21B1/36 ,  B21B15/0085 ,  B21B2015/0057 ,  B21B2015/0064

公开(公告)号：EP4183514A1

公开(公告)日：2023-05-24

申请号：EP20953276.1

申请日：2020-09-10

申请人： Primetals Technologies Japan, Ltd.

发明人： YAGI, Takahiro ,  KAGA, Shinichi ,  WATANABE, Yujiro ,  OKUDA, Takehisa

IPC分类号： B23K26/067 ,  B23K26/21

摘要： A laser processing method includes a step of processing a workpiece by relatively moving the workpiece with respect to a plurality of laser spots including a first spot, a second spot, and a third spot which are linearly arranged so that the first spot, the second spot, and the third spot pass through a processing target portion of the workpiece in this order. To a total amount of energy of laser beam in the first spot, the second spot, and the third spot, a ratio of energy in the first spot is not less than 20% and not more than 30%, a ratio of energy in the second spot is not less than 20% and not more than 30%, and a ratio of energy in the third spot is not less than 45% and not more than 55%.

公开(公告)号：EP2329909B1

公开(公告)日：2018-02-21

申请号：EP08791115.2

申请日：2008-07-11

申请人： Primetals Technologies Japan, Ltd.

发明人： KAGA, Shinichi ,  TOMINAGA, Noriaki ,  SAITO, Takehiko ,  ONOSE, Mitsuru ,  YOSHIMURA, Yasutsugu ,  TAGATA, Hirotoshi ,  WATANABE, Yujiro ,  ZENITANI, Satoru ,  WAKAMOTO, Ikuo

IPC分类号： B23K31/02 ,  B21D1/02 ,  B23K11/04 ,  B23K11/06 ,  B23K11/36 ,  B23K20/12 ,  B23K26/244 ,  B23K37/08 ,  B23K26/26 ,  B23K20/04 ,  B23K11/087 ,  B23K37/04 ,  B23K37/047 ,  B23K26/24 ,  B23K101/12 ,  B23K101/18 ,  B23K103/04

CPC分类号： B23K37/047 ,  B23K11/04 ,  B23K11/061 ,  B23K11/087 ,  B23K20/04 ,  B23K20/122 ,  B23K20/1265 ,  B23K26/24 ,  B23K26/244 ,  B23K26/26 ,  B23K31/02 ,  B23K37/0408 ,  B23K2101/12 ,  B23K2101/18 ,  B23K2103/04

摘要： A pair of upper and lower pressure rollers (3, 4) is disposed so that their axes (15, 16) are tilted in a horizontal plane in respective directions opposite to each other with respect to a straight line perpendicular to a welding line of a joint portion J. The pressure rollers (3, 4) are positively driven by corresponding electric motors (63, 64) to thereby roll the joint portion. Thus, steps defined at the joint portion can be smoothed and a step gradient can be reduced to ensure a high degree of joint strength. The respective tilting directions of the axes (15, 16) of the pressure rollers (3, 4) are such that respective travel-directional portions (3A, 4A) of the pair of pressure rollers (3, 4) face in the horizontal plane toward the corresponding directions opposite to the extending directions of metal plates (5, 6) concerning a metal material with which the pressure rollers (3, 4) first come into contact. Thus, it is possible to prevent a step portion from being interfolded into the base material of the metal plates (5, 6). Thus, a stress concentration factor can be reduced and the steps S defined at the joint portion can be smoothed, thereby enhancing the quality of the joint portion.