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1. 发明申请

US20040200813A1 Method and device for overlapping welding of two coated metal sheets with a beam of high energy density 失效
标题翻译：两种涂层金属板与高能量密度束重叠焊接的方法和装置
公开(公告)号：US20040200813A1
公开(公告)日：2004-10-14
申请号：US10491909
申请日：2004-04-08
发明人： Philippe Alips , Francois Dubrulle , Gabriel Vergniez
IPC分类号： B23K026/24 , B23K026/067
CPC分类号： B23K26/0608 , B23K15/0046 , B23K26/067 , B23K26/142 , B23K26/1438 , B23K26/147 , B23K26/244 , B23K2101/34 , B23K2103/04 , B23K2103/08
摘要： The invention concerns a method for overlapping welding of two coated metal sheets (1, 2) with a beam of high energy density (11), characterized in that it consists in splitting the beam (11) into a first sub-beam (12) passing through both coated metal sheets (1, 2) and forming in said zone a first molten metal bath (18) and into a non-through second sub-beam (13) forming a second molten metal bath (19) whereof the depth is less than the thickness of the upper coated metal sheet (1) and overlapping at least part of the first molten metal bath (18) for promoting evacuation of vapour from the coating material and directing on the second molten metal bath (19) a neutral gas jet with high ejection speed to form at the surface of the second molten metal bath a sink (22).
摘要翻译：本发明涉及一种用于将两个涂覆的金属板（1,2）与高能量密度束（11）重叠焊接的方法，其特征在于它包括将梁（11）分成第一子梁（12）穿过两个涂覆的金属板（1,2）并且在所述区域中形成第一熔融金属浴（18）并形成形成第二熔融金属浴（19）的非直通第二子梁（13），其中深度为小于上部涂覆的金属板（1）的厚度并与第一熔融金属浴（18）的至少一部分重叠，用于促进蒸气从涂层材料中排出并引导第二熔融金属浴（19）上的中性气体以高喷射速度喷射，以在第二熔融金属浴槽的表面形成水槽（22）。

2. 发明申请

US20040074882A1 Joining workpieces by laser welding with powder injection 失效
公开(公告)号：US20040074882A1
公开(公告)日：2004-04-22
申请号：US10359019
申请日：2003-02-05
发明人： Joseph James Speranza , Pei-Chung Wang
IPC分类号： B23K026/24
CPC分类号： F16B5/07 , A44B18/0096 , A44D2203/00 , B23K26/144 , B23K26/244 , B23K26/32 , B23K2101/34 , B23K2103/04 , B23K2103/08 , B23K2103/50 , B64C33/02 , C08L2201/12 , F16B1/0014 , F16B2001/0028 , F16B2001/0035 , F16F2224/045
摘要： A laser is used to melt portions of first and adjacent workpieces to form a weld. As the laser melts the workpieces, a powdered metal is injected into the molten metal pool. The powdered metal improves the strength of the weld by providing additional weld volume to bridge any preexisting gaps between the workpieces. The molten metal is then cooled to form a weld between the workpieces. For welding galvanized steel or metals with coatings or alloy materials having a lower vaporizing temperature, a powdered metal is used that reacts with the lower temperature metal to form an alloy that avoids vaporization during welding, thereby reducing weld porosity and weld spatter.

3. 发明申请

US20040050829A1 Method and device for joining coated metal sheets by means of laser welding 失效
公开(公告)号：US20040050829A1
公开(公告)日：2004-03-18
申请号：US10470929
申请日：2003-07-31
发明人： Kurt Jack
IPC分类号： B23K026/24
CPC分类号： B23K26/16 , B23K26/02 , B23K26/037 , B23K26/244 , B23K26/32 , B23K2101/34 , B23K2103/08 , B23K2103/50
摘要： A method and device for joining coated metal sheets by laser welding is provided in which the metal sheets (1, 2) are placed one on top of another such that the marginal strip (4) of one metal sheet (2) protrudes over the marginal strip (3) of the other metal sheet (1). The marginal strips (3, 4) are pressed together at least in some areas and are joined by laser welding with a laser beam (14) directed at right angles or at about right angles to the plane of the marginal strips (3, 4). The protruding marginal strip (4) is pushed away from the other marginal strip (3) during the laser welding to form a degassing space (10).

4. 发明申请

US20020036190A1 Undewater laser processing apparatus and underwater laser processing method 有权
标题翻译： Undewater激光加工设备和水下激光加工方法
公开(公告)号：US20020036190A1
公开(公告)日：2002-03-28
申请号：US09965122
申请日：2001-09-28
发明人： Masataka Tamura , Seiichiro Kimura , Yuuichi Motora , Hidenori Takahashi
IPC分类号： B23K026/24 , B23K026/12 , B23K026/03
CPC分类号： B23K26/1476 , B23K26/02 , B23K26/03 , B23K26/032 , B23K26/0648 , B23K26/0665 , B23K26/1224 , B23K26/123 , B23K26/14
摘要： An underwater laser processing apparatus includes an optical unit and a nozzle. The optical unit irradiates a condensed laser beam generated by a YAG laser oscillator to a certain point on a underwater workpiece. The nozzle has a gas exit for supplying a gas to the certain point. In the nozzle, an area surrounding the gas exit extends to the surface of the workpiece. This area keeps the supplied gas between the nozzle and the workpiece to improve the underwater laser process.
摘要翻译：水下激光加工装置包括光学单元和喷嘴。光学单元将由YAG激光振荡器产生的聚光激光束照射到水下工件上的某一点。喷嘴具有用于向某一点供应气体的气体出口。在喷嘴中，围绕气体出口的区域延伸到工件的表面。该区域保持喷嘴和工件之间的供气，以改善水下激光过程。

5. 发明申请

US20040188395A1 Laser-hybrid welding with beam oscillation 有权
标题翻译：激光混合焊接与光束振荡
公开(公告)号：US20040188395A1
公开(公告)日：2004-09-30
申请号：US10821734
申请日：2004-04-08
发明人： Israel Stol , Richard P. Martukanitz
IPC分类号： B23K026/24 , B23K009/00
CPC分类号： B23K26/26 , B23K9/173 , B23K26/02 , B23K26/082 , B23K26/211 , B23K26/242 , B23K26/244 , B23K26/348 , B23K2103/10
摘要： A method of welding metal components together including moving a laser beam in a first direction along an interface between a pair of metal components such that in the vicinity of the focused beam, metal from each component is vaporized to produce a keyhole in a pool of molten metal. The laser beam is oscillated in a direction different from (e.g., transverse to) the first direction such that the keyhole oscillates through the pool of molten metal and molten metal fills into the keyhole as the position of the keyhole changes.
摘要翻译：一种将金属部件焊接在一起的方法，包括沿着一对金属部件之间的界面沿第一方向移动激光束，使得在聚焦光束附近，来自每个部件的金属被蒸发以在熔融的熔池中产生锁孔金属。激光束在与第一方向不同（例如横向于）的方向上振荡，使得当孔锁的位置改变时，键孔通过熔融金属池和熔融金属填充到锁眼中。

6. 发明申请

US20030136768A1 Method and apparatus for composite YAG laser/arc welding 失效
标题翻译：复合YAG激光/电弧焊接方法和装置
公开(公告)号：US20030136768A1
公开(公告)日：2003-07-24
申请号：US10318032
申请日：2002-12-13
发明人： Hirofumi Sonoda , Kenji Okuyama , Junichi Ibukuro , Takanori Yahaba , Masato Takikawa , Yasutomo Ichiyama , Toshiyasu Ukena
IPC分类号： B23K026/24
CPC分类号： B23K26/348
摘要： A combined YAG laser/arc welding apparatus is disclosed which performs a welding operation with a large depth of fusion and a deep fusion at a high efficiency. The welding apparatus includes an arc electrode which targets a point on a welded member where a laser beam from a YAG laser is focused. While an arc power supply is connected between the arc electrode and the welded member, the welded member is irradiated by the YAG laser to produce plasmoid gasses and metal vapors or a plume which is effective to start an arc from the arc electrode. A combined YAG laser/arc welding operation takes place while keeping the plume within and without a keyhole. Welded surface is covered by a hood, and a shielded gas passed through a commutation metal network surrounds the welded focus to prevent an oxidation and keeps the plume maintained. A filler wire is fed to a molten pool.
摘要翻译：公开了一种组合的YAG激光/电弧焊接装置，其以高效率进行熔融深度和深度融合的焊接操作。焊接装置包括：电弧电极，其靶向来自YAG激光器的激光束聚焦的焊接部件上的点。在电弧电极和焊接部件之间连接有电弧电源的情况下，焊接部件被YAG激光照射，产生有效地从电弧电极开始电弧的等离子体气体和金属蒸气或羽流。发生组合的YAG激光/电弧焊接操作，同时将羽流保持在孔眼内和不具有孔眼。焊接表面被罩覆盖，并且穿过换向金属网络的屏蔽气体围绕焊接焦点以防止氧化并保持羽流保持。将填充线送入熔池。

7. 发明申请

US20020088782A1 Method of correcting laser beam intensity, laser beam intensity correction mechanism and multi-branched laser oscillation device having the same 失效
标题翻译：校正激光束强度的方法，激光束强度校正机构和具有此激光束强度的多分支激光振荡装置
公开(公告)号：US20020088782A1
公开(公告)日：2002-07-11
申请号：US10038617
申请日：2002-01-08
申请人： NEC CORPORATION
发明人： Hiroyuki Morita
IPC分类号： B23K026/067 , B23K026/24 , B23K026/06
CPC分类号： H01S3/005 , B23K26/0619 , B23K26/067 , G02B5/3066 , G02B26/02 , G02B27/281
摘要： A method of correcting laser beam intensity, a laser beam intensity correction mechanism and a multi-branched laser oscillation device having the correction mechanism to adjust the laser beam intensity easily and smoothly, are provided. A laser beam oscillation device includes a laser oscillator 7, a reflection mirror 8, beam splitters 9a and 9b and a reflection mirror 9c leading the laser beam to optical paths 1 to 3, laser beam intensity correction mechanisms 10 correcting the laser beam intensity in each optical path, and optical systems 11. Each of the laser beam intensity correction mechanisms 10 includes a rotating portion 10d rotating around an optical axis of the laser beam by moving a lever in the case, and an optical substrate 10b slantly fixed to a rotating portion in a manner that an incident angle of the laser beam thereto is set at a Brewster's angle. The optical substrate 10b is rotated around the optical axis while maintaining the Brewster's angle. Subsequently, polarizing operation adjusts transmission intensity of the laser beam such that the laser beam intensity in each optical path becomes equal to each other.
摘要翻译：提供校正激光束强度的方法，激光束强度校正机构和具有校正机构的多分支激光振荡装置，以便容易且平稳地调节激光束强度。激光束振荡装置包括激光振荡器7，反射镜8，分束器9a和9b以及将激光束引导到光路1至3的反射镜9c，激光束强度校正机构10校正每个激光束的激光束强度光路和光学系统11.激光束强度校正机构10中的每一个包括通过在壳体中移动杠杆而围绕激光束的光轴旋转的旋转部分10d和倾斜地固定到旋转部分的光学基板10b 以将激光束的入射角设定为布鲁斯特角的方式。光学基板10b围绕光轴旋转同时保持布鲁斯特的角度。随后，极化操作调节激光束的透射强度，使得每个光路中的激光束强度彼此相等。

8. 发明申请

US20020066721A1 Laser-processing unit with observation device 失效
标题翻译：具有观察装置的激光加工单元
公开(公告)号：US20020066721A1
公开(公告)日：2002-06-06
申请号：US09992340
申请日：2001-11-19
发明人： Wolfgang Bauer , Lutz Langhans , Thomas Renner
IPC分类号： B23K026/24 , B23K026/06
CPC分类号： B23K26/032
摘要： The invention relates to a laser-processing unit, in particular a laser-welding unit, having a laser beam source (2) for generating a laser beam (LS) and having a pivotable focusing unit (8) for pivoting the laser beam (LS) about two axes of rotation (x, y) and for focusing the laser beam (LS) in a focus (F). A dichroic mirror (4) is arranged in the beam path of the laser beam (LS) between the laser beam source (2) and the focusing unit (8), which mirror is assigned an observation device (20) in such a manner that the optical axis (22) of this device coincides with the axis (24) of the laser beam (LS) as it propagates downstream of the dichroic mirror, as seen in the direction of propagation of the laser beam (LS).
摘要翻译：本发明涉及一种具有激光束源（2）的激光处理单元，特别是激光焊接单元，该激光束源用于产生激光束（LS），并具有用于使激光束（LS）旋转的可枢转聚焦单元）围绕两个旋转轴（x，y）并将激光束（LS）聚焦在焦点（F）中。在激光束源（2）和聚焦单元（8）之间的激光束（LS）的光束路径中布置了分色镜（4），该反射镜被分配观察装置（20），使得当激光束（LS）的传播方向观察时，该装置的光轴（22）在激光束（LS）的轴线（24）上传播时，与分色镜的下游传播。

9. 发明申请

US20040182836A1 Process for laser beam welding with reduced formation of end craters 有权
标题翻译：激光束焊接工艺，减少了端部陨石坑的形成
公开(公告)号：US20040182836A1
公开(公告)日：2004-09-23
申请号：US10790387
申请日：2004-03-01
发明人： Wolfgang Becker , Markus Beck , Klaus Goth , Mike Paelmer , Claus-Dieter Reiniger , Daniel Zauner
IPC分类号： B23K026/24
CPC分类号： B23K26/24
摘要： During laser beam welding a so-called end crater forms at the end of the weld seam. The end crater is formed by the volume shrinkage of the solidifying melt after the laser beam reaches the seam end and is switched off or repositioned. The end crater acts as a geometric notch and decreases the mechanical characteristics, in particular the operational stability, of the weld seam so that holes or tears in the area of the end crater can occur. The task of the present invention is thus comprised of providing a process for reducing end crater formation. The task is solved in that towards the seam end the focus of the laser beam is distanced from the surface to be welded and/or a transverse movement of the beam occurs.
摘要翻译：在激光束焊接期间，在焊缝的末端形成所谓的端部火山口。端部火山口由激光束到达接缝端部之后的凝固熔体的体积收缩而形成，并且被切断或重新定位。端部火山口用作几何缺口，并且减小焊缝的机械特性，特别是操作稳定性，使得可能发生端部火山口区域中的孔或眼泪。因此，本发明的任务包括提供减少端部火山口形成的方法。解决的问题是，对于接缝端，激光束的焦点远离待焊接的表面和/或发生光束的横向移动。

10. 发明申请

US20020079295A1 Laser-welding head 有权
标题翻译：激光焊头
公开(公告)号：US20020079295A1
公开(公告)日：2002-06-27
申请号：US10020189
申请日：2001-12-18
申请人： KAWASAKI JUKOGYO KABUSHIKI KAISHA
发明人： Shigekazu Shikoda , Tetsuya Kubota , Hirotaka Uehara , Osamu Satoh , Tomoyuki Uno , Takayuki Murata , Mamoru Nishio
IPC分类号： B23K026/24
CPC分类号： B23K26/0884 , B23K26/037 , B23K26/244 , B23K2103/04
摘要： A laser-welding head is capable of applying a fixed pressure to parts to be welded of workpieces regardless of the undulation of the surfaces of the parts to be welded. The laser-welding head includes a pressing device (12) having a roller (16) which rolls along parts of workpieces near a weld line (40) to press together the same parts of the workpieces, a pressing unit (6) for applying a predetermined pressure to the pressing device (12) to press the pressing device (12) toward the parts of the workpieces near the weld line (40), and a laser beam projecting unit (17) mounted on the pressing unit (6) for movement together with the pressing device (12). The pressing unit (6) is provided with a pneumatic cylinder actuator for applying the predetermined pressure to the pressing device (12).
摘要翻译：激光焊接头能够对待焊接的部件施加固定的压力，而不管待焊接部件的表面是否起伏。激光焊接头包括：压制装置（12），其具有辊（16），该辊（16）沿着焊接线（40）附近的工件的一部分滚动以将工件的相同部分压在一起;加压单元（6）向加压装置（12）施加预定压力以将加压装置（12）朝向焊接线（40）附近的工件的部分挤压;以及激光束投影单元（17），其安装在按压单元（6）上以移动与加压装置（12）一起。按压单元（6）设置有用于将预定压力施加到按压装置（12）的气动缸致动器。

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