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2. 发明公开

EP3922398A2 LASER-ARC HYBRID WELDING APPARATUS 审中-实审
公开(公告)号：EP3922398A2
公开(公告)日：2021-12-15
申请号：EP21177918.6
申请日：2021-06-07
申请人： DAIHEN Corporation
发明人： FUJIWARA, Masayuki , TAMAKI, Ryoji
IPC分类号： B23K26/348 , B23K103/20
摘要： A laser-arc hybrid welding apparatus (1) used for dissimilar material welding includes: a laser-beam irradiation device constituted of a laser oscillator (60) and a laser torch (40); and an arc welding device constituted of a welding power supply (30) and a welding torch (10). The arc welding device changes an arc output (a welding current) at a frequency between a frequency f1 and a frequency f2. At the first frequency f1, an output change in a welding progressing direction occurs in a cycle of 12 mm when welding is performed at a prescribed welding speed. At the second frequency f2, the output change in the welding progressing direction occurs in a cycle of 2 mm when welding is performed at the prescribed welding speed. The welding speed is from 0.8 m/min to 2.0 m/min.

3. 发明公开

EP3922396A1 LASER-ARC HYBRID WELDING APPARATUS 无效
公开(公告)号：EP3922396A1
公开(公告)日：2021-12-15
申请号：EP21177935.0
申请日：2021-06-07
申请人： DAIHEN Corporation
发明人： FUJIWARA, Masayuki , TAMAKI Ryoji
IPC分类号： B23K26/14 , B23K26/242 , B23K28/02 , B23K26/073 , B23K26/06 , B23K9/09 , B23K26/348 , B23K103/20
摘要： A laser-arc hybrid welding apparatus (1) includes: a laser-beam irradiation device constituted of a laser oscillator (60) and a laser torch (40); and an arc welding device constituted of a welding power supply (30) and a welding torch (10). The laser-arc hybrid welding apparatus (1) can be used for dissimilar material welding. Thus, the arc welding device is configured to change an average value of a welding current in a frequency range between 10 Hz and 30 Hz.

4. 发明公开

EP3797913A1 JOINING STRUCTURE AND METHOD FOR MANUFACTURING SAME 有权
公开(公告)号：EP3797913A1
公开(公告)日：2021-03-31
申请号：EP19825575.4
申请日：2019-05-31
申请人： KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
发明人： CHEN Liang , WATANABE Kenichi , YASUI Kazuya , SHI Dongyong , HADANO Masao , KIMURA Takayuki , SUZUKI Reiichi
IPC分类号： B23K9/025 , B23K9/00 , B23K9/16 , B23K9/167 , B23K10/02 , B23K26/242 , B23K26/244 , B23K26/348 , B62D25/04
摘要： Provided are a joining structure that has high joining strength and can be manufactured at low cost, and a method for manufacturing the joining structure. A joining structure in which there are joined a steel first plate-form member and a steel second plate-form member that overlaps the first plate-form member and is formed in a long shape, wherein the surface of the first plate-form member and both edge parts along the longitudinal direction of the second plate-form member are joined by a welding metal.

5. 发明公开

EP3623096A1 LASER-ARC HYBRID WELDING METHOD 审中-公开
公开(公告)号：EP3623096A1
公开(公告)日：2020-03-18
申请号：EP18858804.0
申请日：2018-09-18
申请人： JFE Steel Corporation
发明人： IWATA Shohei , OKITA Yasuaki , KITANI Yasushi
IPC分类号： B23K26/348 , B23K35/30
摘要： Provided is a laser-arc hybrid welding method that can considerably suppress spatter formation by controlling the transfer mode of droplets and that can reduce thermal effects and/or thermal deformation associated with welding by setting to a low welding current. The present invention is directed to a laser-arc hybrid welding method, where: a minimum diameter D MIN (mm) of droplets that are transferred from a steel welding wire to a molten pool generated by the gas-shielded arc welding satisfies D MIN ≥ (P/15) + (1/2) relative to a power (kW) of a laser beam generated by the laser welding; and a maximum diameter D MAX (mm) of the droplets satisfies M ≥ 4D MAX /3 relative to a length M (mm) of an arc generated by the gas-shielded arc welding.

6. 发明公开

EP3498417A1 WELDING APPARATUS WITH LASER CLEANING DEVICE AND METHOD OF WELDING AND CLEANING 审中-实审转让
公开(公告)号：EP3498417A1
公开(公告)日：2019-06-19
申请号：EP17206997.3
申请日：2017-12-13
申请人： Westinghouse Electric Sweden AB
发明人： REMAHL, Henrik
IPC分类号： B23K26/348 , B23K26/60 , B23K9/235 , G21C19/20 , B23K101/06
摘要： A welding apparatus (1) and a method of welding are disclosed. The welding apparatus comprises a welding tool (2) having a welding head (5), which is movable along a welding direction (W D ). The welding tool supplies welding energy via the welding head to a metallic surface (6) to be welded, thereby creating a weld bead (8) extending on the metallic surface along the welding direction. A laser cleaning device (3) provides a laser beam (15). Beam directing means directs the laser beam to a spot (16) on the metallic surface. The welding apparatus moves the spot along the welding direction in order to clean the metallic surface.

7. 发明授权

EP3012057B1 Method of welding in deep joints 有权转让
公开(公告)号：EP3012057B1
公开(公告)日：2019-04-24
申请号：EP14190216.3
申请日：2014-10-24
申请人： General Electric Technology GmbH
发明人： Jaekel, Dirk , Horvath, Balint , Keller, Sorin , Ambrosy, Günter
IPC分类号： B23K9/16 , B23K26/12 , B23K26/21 , B23K26/348 , B23K9/02 , B23K9/167 , B23K26/067

8. 发明授权

EP3693118B1 HYBRID ADDITIVE MANUFACTURING SYSTEM USING LASER AND ARC WELDING 有权
公开(公告)号：EP3693118B1
公开(公告)日：2022-10-05
申请号：EP20155471.4
申请日：2020-02-04
发明人： LIU, Shuang , WAGNER, Dustin , MILLER, Erik
IPC分类号： B23K9/073 , B23K9/173 , B23K9/235 , B23K26/046 , B23K26/342 , B23K26/348 , B23K28/02

9. 发明公开

EP3750665A9 HYBRID-WELDING METHOD AND DEVICE FOR CONTINUOUS WELDING, FINISHED WELDED PRODUCT, AND VEHICLE BODY 有权
公开(公告)号：EP3750665A9
公开(公告)日：2021-11-10
申请号：EP19917520.9
申请日：2019-09-09
申请人： CRRC QINGDAO SIFANG CO., LTD.
发明人： HAN, Xiaohui , MAO, Zhendong , GAO, Yuexin , ZHENG, Kai , LI, Gangqing
IPC分类号： B23K26/348 , B23K26/70
摘要： A continuous welding method and device for a hybrid welding, a welded finished product and a train body. The method comprises: performing hybrid welding on a groove of a welding piece by coupling a laser and a variable polarity arc; wherein the defocusing distance of the laser is not less than a Rayleigh length of the laser. According to the method of the present disclosure, the power density of the laser on the surface of the welding piece is effectively reduced and the height-width-ratio of the weld seam is decreased, the diameter of the welding melted pore is increased, the voids caused by the collapse of the small pore in the welding melted pore can be effectively reduced, thereby solving the problem that the weld porosity is difficult to escape in the prior art, and reducing the generation of the pores, effectively improving welding stability and reliability, and improving the mechanical properties of the weld seams.

10. 发明公开

EP3892415A1 JOINING METHOD 审中-实审
公开(公告)号：EP3892415A1
公开(公告)日：2021-10-13
申请号：EP19892199.1
申请日：2019-07-25
申请人： Nippon Light Metal Company, Ltd.
发明人： YOSHIDA, Ryo , KANEKI, Hiroshi
IPC分类号： B23K26/348 , B23K9/02 , B23K9/16 , B23K26/242
摘要： A joining method including an overlapping step of overlapping a first metal member and a second metal member such that a front surface of the first metal member is opposed to a back surface of the second metal member; and a welding step of performing a laser welding and a MIG welding by using a hybrid welding machine including a preceding laser welding unit and a following MIG welding unit, in which the laser welding is performed by emitting a laser beam onto a front surface of the second metal member, the MIG welding is performed on an inner corner portion formed by the front surface of the first metal member and an end surface of the second metal member, and a target position for the laser beam from the laser welding unit is located against the second metal member relative to a target position for a MIG arc by the MIG welding unit.

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