Hybrid laser-arc welding method with gas flow rate adjustment
    1.
    发明申请
    Hybrid laser-arc welding method with gas flow rate adjustment 审中-公开
    混合式激光弧焊法采用气体流量调节

    公开(公告)号:US20050011868A1

    公开(公告)日:2005-01-20

    申请号:US10489444

    申请日:2002-07-29

    摘要: The invention concerns a hybrid arc-laser method for welding metal parts, such as a tube or tailored blanks by producing at least a weld joint between edges to be welded and by using a laser beam and an electric arc combined with each other so as to melt and subsequently solidify the metal along said edges to be welded. Said method consists in: (a) striking at least a pilot arc between an electrode and a hybrid welding head nozzle, said electrode being powered with electric current and being contacted with a first gas input in said hybrid welding head, said first gas having a gas composition capable of promoting sparking of the pilot arc; (b) transferring the thus sparked pilot arc to the edges of the part(s) to be welded; and (c) feeding said hybrid welding head with a second gas so as to obtain a protective gaseous atmosphere consisting of a mixture of the first gas and the second gas, said protective gaseous atmosphere being evacuated towards the welding zone by said hybrid welding head and protecting at least part of the welding zone during welding of the weld joint by combining the laser beam and the electric arc, the volume flow rate of the first gas (Q1) and the volume flow rate of the second gas (Q2) being adjusted such that: 0

    摘要翻译: 本发明涉及一种用于通过在待焊接的边缘之间产生至少一个焊接接头并且通过使用激光束和彼此结合的电弧来焊接诸如管或定制坯料的金属部件的混合电弧激光器方法,以便 熔化并随后沿着待焊接的边缘使金属固化。 所述方法包括:(a)在电极和混合焊接头喷嘴之间至少引导引弧,所述电极由电流供电并与所述混合焊接头中的第一气体输入接触,所述第一气体具有 能够促进引燃弧的火花的气体成分; (b)将如此引发的先导电弧转移到待焊接的部件的边缘; 和(c)用第二气体供给所述混合焊接头,以获得由第一气体和第二气体的混合物组成的保护性气体气体,所述保护性气体气体通过所述混合焊接头朝向焊接区域抽真空, 通过组合激光束和电弧来焊接焊接部的至少一部分焊接区域,第一气体(Q1)的体积流量和第二气体(Q2)的体积流量被调整为 :0

    Modulated spray MIG welding process and device
    2.
    发明授权
    Modulated spray MIG welding process and device 失效
    调制喷雾MIG焊接工艺及装置

    公开(公告)号:US6111218A

    公开(公告)日:2000-08-29

    申请号:US166922

    申请日:1998-10-06

    CPC分类号: B23K9/093 B23K2203/10

    摘要: A process and a device for the gas-shielded MIG welding in modulated-spray mode, of aluminum, particularly aluminum alloys, or stainless steels, in which the current is modulated at a modulation frequency of less than 60 Hz. The shielding gas contains at least 90% helium, argon or a mixture thereof and at most 1.95% of at least one minor gaseous component chosen from oxygen and carbon dioxide. This process allows effective degassing of most of the diffusible hydrogen liable to be found in the pool of molten metal and improves the appearance and quality of the weld beads thus produced on workpieces or equipment intended for the rail, sea, air, road or space transport industry or for the chemical, petrochemical, electronic, nuclear or agrochemical industries.

    摘要翻译: 铝,特别是铝合金或不锈钢的调制喷雾模式的气体保护MIG焊接的工艺和装置,其中电流以小于60Hz的调制频率被调制。 保护气体含有至少90%的氦气,氩气或其混合物,以及至少一种选自氧气和二氧化碳的少量气态组分的1.95%。 该方法允许在熔融金属池中易于发现的大部分可扩散的氢的有效脱气,并且改善了在用于轨道,海洋,空气,道路或空间运输的工件或设备上产生的焊球的外观和质量 工业或化工,石化,电子,核能或农化行业。

    Method and apparatus for the laser cutting of mild steel or structural steel with a multifocus optical component
    3.
    发明授权
    Method and apparatus for the laser cutting of mild steel or structural steel with a multifocus optical component 失效
    用多焦点光学部件激光切割低碳钢或结构钢的方法和装置

    公开(公告)号:US06521864B2

    公开(公告)日:2003-02-18

    申请号:US09755051

    申请日:2001-01-08

    IPC分类号: B23K2600

    摘要: Method and apparatus for cutting a workpiece made of structural steel or mild steel, i.e. alloy or non-alloy steels, by the use of a transparent or reflecting optical unit for focusing a laser beam, and of an assist gas for the laser beam. The optical unit is of the multifocus type and is chosen from lenses, mirrors and combinations thereof. The assist gas is nitrogen or a nitrogen/oxygen mixture. The method of the invention makes it possible to obtain a low or almost zero oxidation of the cut face and to do so while increasing the cutting performance by about 40% compared with a laser cutting method using nitrogen or a nitrogen/oxygen mixture.

    摘要翻译: 用于通过使用用于聚焦激光束的透明或反射光学单元和用于激光束的辅助气体来切割由结构钢或软钢(即合金或非合金钢)制成的工件的方法和装置。 光学单元是多焦点类型,并且选自透镜,反射镜及其组合。 辅助气体是氮气或氮气/氧气混合物。 与使用氮或氮/氧混合物的激光切割方法相比,本发明的方法使得可以获得切割面的低或几乎零氧化并且同时将切割性能提高约40%。

    LASER MACHINING EQUIPMENT HAVING A COMMON GAS SOURCE FOR THE LASER OSCILLATOR AND HEAD
    4.
    发明申请
    LASER MACHINING EQUIPMENT HAVING A COMMON GAS SOURCE FOR THE LASER OSCILLATOR AND HEAD 审中-公开
    激光加工设备具有激光振荡器和头部的通用气源

    公开(公告)号:US20120312788A1

    公开(公告)日:2012-12-13

    申请号:US13579322

    申请日:2011-01-21

    IPC分类号: B23K26/12

    摘要: The invention relates to a laser machining equipment including a laser oscillator (1) for generating a laser beam, a laser head (3) through which the laser beam passes, an optical path (2) for conveying the laser beam between the laser oscillator (1) and the laser head (3), and a gas source (9) fluidly connected to the laser head (3) via a main gas pipe (8). In addition, a second pipe (18) fluidly connects the gas source (9) to the laser oscillator (1). The equipment therefore comprises a common gas source for the laser oscillator (1) and head (3). The gas is preferably nitrogen.

    摘要翻译: 本发明涉及一种激光加工设备,包括用于产生激光束的激光振荡器(1),激光束通过的激光头(3),用于将激光束传送到激光振荡器 1)和激光头(3)以及通过主气体管道(8)与激光头(3)流体连接的气体源(9)。 此外,第二管道(18)将气体源(9)流体连接到激光振荡器(1)。 因此,该设备包括用于激光振荡器(1)和头(3)的公共气体源。 气体优选为氮气。

    Method for hybrid multiple-thickness laser-arc welding with edge welding
    5.
    发明申请
    Method for hybrid multiple-thickness laser-arc welding with edge welding 审中-公开
    用于边缘焊接的混合多层激光电弧焊接方法

    公开(公告)号:US20050211688A1

    公开(公告)日:2005-09-29

    申请号:US10513762

    申请日:2003-04-11

    IPC分类号: B23K26/14 B23K28/02 B23K9/00

    CPC分类号: B23K28/02 B23K26/348

    摘要: A method for the hybrid laser-arc welding of several metal workpieces. The welding process uses at least one laser beam and at least one electric arc. The metal workpieces are stacked in a multiple-thickness configuration and the laser beam and the electric arc are used to weld the edges of the multiple-thickness configuration.

    摘要翻译: 一种用于几种金属工件的混合激光电弧焊接的方法。 焊接过程使用至少一个激光束和至少一个电弧。 金属工件以多层结构堆叠,激光束和电弧用于焊接多层结构的边缘。

    High-speed laser cutting method with adapted gas
    6.
    发明授权
    High-speed laser cutting method with adapted gas 失效
    采用适应气体的高速激光切割方法

    公开(公告)号:US06891126B2

    公开(公告)日:2005-05-10

    申请号:US10416421

    申请日:2001-11-08

    申请人: Olivier Matile

    发明人: Olivier Matile

    CPC分类号: B23K26/123 B23K26/125

    摘要: The invention concerns a method for cutting a metal or metal alloy workpiece using at least a laser beam and at least an assist gas of said laser beam wherein the assist gas consists of a mixture of helium and argon and/or nitrogen or of nitrogen and oxygen and the cutting speed is faster than 15 m/min. The thickness of the workpiece to be cut ranges between 0.5 mm and 10 mm, preferably more than 0.5 mm. The workpiece to be cut is selected among plates, metal sheets and tubes. The laser beam is delivered by a CO2 type or YAG:Nd laser device.

    摘要翻译: 本发明涉及一种使用至少激光束和所述激光束的至少辅助气体来切割金属或金属合金工件的方法,其中辅助气体由氦气和氩气和/或氮气或氮气和氧气的混合物组成 切割速度快于15米/分钟。 要切割的工件的厚度在0.5mm和10mm之间,优选大于0.5mm。 要切割的工件选自板,金属板和管。 激光束由CO 2类型或YAG:Nd激光器件传送。