WO2018144524A1 - Methods and systems for welding copper using blue laser - Google Patents

Methods and systems for welding copper using blue laser Download PDF

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Publication number
WO2018144524A1
WO2018144524A1 PCT/US2018/016119 US2018016119W WO2018144524A1 WO 2018144524 A1 WO2018144524 A1 WO 2018144524A1 US 2018016119 W US2018016119 W US 2018016119W WO 2018144524 A1 WO2018144524 A1 WO 2018144524A1
Authority
WO
WIPO (PCT)
Prior art keywords
weld
laser beam
copper
piece
laser
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2018/016119
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English (en)
French (fr)
Inventor
Matthew FINUF
William C. GREY
Robert D. FRITZ
Mark Zediker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nuburu Inc
Original Assignee
Nuburu Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=63041135&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2018144524(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority to EP18748109.8A priority Critical patent/EP3576899B1/en
Priority to KR1020197023760A priority patent/KR102404336B1/ko
Priority to CN201880014720.XA priority patent/CN110709203B/zh
Priority to KR1020227028596A priority patent/KR102762732B1/ko
Priority to JP2019562226A priority patent/JP6911153B2/ja
Application filed by Nuburu Inc filed Critical Nuburu Inc
Priority to CA3052155A priority patent/CA3052155A1/en
Priority to CN202210292348.7A priority patent/CN114523204A/zh
Priority to KR1020227010113A priority patent/KR102473803B1/ko
Publication of WO2018144524A1 publication Critical patent/WO2018144524A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/21—Bonding by welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/0604—Shaping the laser beam, e.g. by masks or multi-focusing by a combination of beams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/0006—Working by laser beam, e.g. welding, cutting or boring taking account of the properties of the material involved
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/03—Observing, e.g. monitoring, the workpiece
    • B23K26/032—Observing, e.g. monitoring, the workpiece using optical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/0604—Shaping the laser beam, e.g. by masks or multi-focusing by a combination of beams
    • B23K26/0608—Shaping the laser beam, e.g. by masks or multi-focusing by a combination of beams in the same heat affected zone [HAZ]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/062—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/062—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam
    • B23K26/0626—Energy control of the laser beam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/073—Shaping the laser spot
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/12—Working by laser beam, e.g. welding, cutting or boring in a special environment or atmosphere, e.g. in an enclosure
    • B23K26/123—Working by laser beam, e.g. welding, cutting or boring in a special environment or atmosphere, e.g. in an enclosure in an atmosphere of particular gases
    • B23K26/125—Working by laser beam, e.g. welding, cutting or boring in a special environment or atmosphere, e.g. in an enclosure in an atmosphere of particular gases of mixed gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/21—Bonding by welding
    • B23K26/24—Seam welding
    • B23K26/244—Overlap seam welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/21—Bonding by welding
    • B23K26/24—Seam welding
    • B23K26/26—Seam welding of rectilinear seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/70—Auxiliary operations or equipment
    • B23K26/702—Auxiliary equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass
    • B23K37/04—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work
    • B23K37/0408—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work for planar work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/36—Electric or electronic devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/02—Iron or ferrous alloys
    • B23K2103/04—Steel or steel alloys
    • B23K2103/05—Stainless steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/08—Non-ferrous metals or alloys
    • B23K2103/10—Aluminium or alloys thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/08—Non-ferrous metals or alloys
    • B23K2103/12—Copper or alloys thereof

Definitions

  • FIG. 7 shows a conduction mode weld on a 70 ⁇ thick copper foil showing the micro-structure through the HAZ and weld.
  • the weld was made using the parameters described in Example 1 .
  • the depth of penetration of each sample was determined by first cross sectioning, then etching the sample to reveal the microstructure of the weld and HAZ areas.
  • one of the samples was cross sectioned and the Vickers hardness across the base metal ranged from 133-141 HV, the weld bead was approximately 135 HV and the HAZ ranged from 1 18-132 HV.
  • the conclusion is that hardness of the base material, HAZ and weld bead, e.g.,
  • the clamps 4001 are designed to put pressure on the parts to be welded at 2 mm from the edges of the gap 4003 in the baseplate 4002. Thus, in this embodiment a 6 mm wide area of the parts to be welded is open to the laser beam (recognizing that the laser beam will be a slight distance away from the clamp). This positioning of the clamps allows the laser beam easy access to the surface as well as a tight clamping of the parts.
  • This type of clamp is the preferred method for butt welding two foils or sheets of copper together varying in thickness from 50 ⁇ to multiple mm.
  • high quality and excellent welds are obtained by providing sufficient clamping force to prevent movement of the parts during the weld while minimizing the parasitic heat loss to the fixture itself.
  • the embodiment of the fixture in FIGS. 12 and 12A represents a cross section of a straight portion of a weld fixture and may be designed into any arbitrary 2-D path (e.g., - S - , -C -. -W - etc.) for welding any types of shapes together.
  • the fixture may be preheated, or heated during the welding process to increase the speed or depth of penetration of the weld while reducing the parasitic heat losses to the fixture.
  • Embodiments of the present invention can find great advantage in welding copper materials, which would include copper, pure copper, alloys of copper and all materials having sufficient amounts of copper to have at about a 40% to 75% absorption in the blue laser wavelengths, and preferably about 400 nm to about 500 nm.
  • FIG. 2 shows an example of a keyhole weld on a 500 ⁇ thick copper sample.
  • the vapor pressure developed in the keyhole forces molten copper out of the weld bead. This can be seen in FIG. 2 where the ejected copper lines the edges of the weld bead. This ejection process is stable and does not result in micro-explosions in the material and consequently it does not produce the spatter patterns observed when welding copper with an IR laser source.

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Laser Beam Processing (AREA)
PCT/US2018/016119 2017-01-31 2018-01-31 Methods and systems for welding copper using blue laser Ceased WO2018144524A1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
KR1020227010113A KR102473803B1 (ko) 2017-01-31 2018-01-31 청색 레이저를 사용한 구리 용접 방법 및 시스템
KR1020197023760A KR102404336B1 (ko) 2017-01-31 2018-01-31 청색 레이저를 사용한 구리 용접 방법 및 시스템
CN201880014720.XA CN110709203B (zh) 2017-01-31 2018-01-31 使用蓝色激光焊接铜的方法和系统
KR1020227028596A KR102762732B1 (ko) 2017-01-31 2018-01-31 청색 레이저를 사용한 구리 용접 방법 및 시스템
JP2019562226A JP6911153B2 (ja) 2017-01-31 2018-01-31 青色レーザーを使用して銅を溶接するための方法及びシステム
EP18748109.8A EP3576899B1 (en) 2017-01-31 2018-01-31 Method for welding copper using blue laser
CA3052155A CA3052155A1 (en) 2017-01-31 2018-01-31 Methods and systems for welding copper using blue laser
CN202210292348.7A CN114523204A (zh) 2017-01-31 2018-01-31 使用蓝色激光焊接铜的方法和系统

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201762452598P 2017-01-31 2017-01-31
US62/452,598 2017-01-31

Publications (1)

Publication Number Publication Date
WO2018144524A1 true WO2018144524A1 (en) 2018-08-09

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PCT/US2018/016119 Ceased WO2018144524A1 (en) 2017-01-31 2018-01-31 Methods and systems for welding copper using blue laser

Country Status (7)

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US (3) US10940562B2 (https=)
EP (1) EP3576899B1 (https=)
JP (3) JP6911153B2 (https=)
KR (3) KR102473803B1 (https=)
CN (2) CN114523204A (https=)
CA (1) CA3052155A1 (https=)
WO (1) WO2018144524A1 (https=)

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CN110471191A (zh) * 2019-08-02 2019-11-19 福州腾景光电科技有限公司 一种用于材料处理的新型多波段光源及其实现方法
CN111872554A (zh) * 2020-07-14 2020-11-03 深圳市睿达科技有限公司 一种焊接控制方法
JPWO2021132682A1 (https=) * 2019-12-25 2021-07-01
EP3851227A1 (de) * 2020-01-17 2021-07-21 C. Hafner GmbH + Co. KG Verfahren zur additiven fertigung eines dreidimensionalen körpers aus einem metallpulver sowie ein derartig hergestellter körper
JP2021115618A (ja) * 2020-01-28 2021-08-10 パナソニックＩｐマネジメント株式会社 レーザー加工方法、レーザー加工装置、及びレーザー加工装置の出力制御装置
CN114502315A (zh) * 2019-09-06 2022-05-13 崇德超声波有限公司 用于焊接至少两个部件的焊接设备及方法
CN114633022A (zh) * 2022-03-10 2022-06-17 湖北三江航天红峰控制有限公司 一种紫铜材料双光束复合激光焊接装置及方法
EP3902648A4 (en) * 2018-12-30 2022-11-16 Nuburu, Inc. METHODS AND SYSTEMS FOR WELDING COPPER AND OTHER METALS USING BLUE LASERS
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US11646549B2 (en) 2014-08-27 2023-05-09 Nuburu, Inc. Multi kW class blue laser system
US12172377B2 (en) 2016-04-29 2024-12-24 Nuburu, Inc. Blue laser metal additive manufacturing system
CN114160813A (zh) 2016-04-29 2022-03-11 努布鲁有限公司 可见光激光增材制造
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KR102473803B1 (ko) * 2017-01-31 2022-12-02 누부루 인크. 청색 레이저를 사용한 구리 용접 방법 및 시스템
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DE102019110189A1 (de) * 2019-04-17 2020-10-22 OSRAM Opto Semiconductors Gesellschaft mit beschränkter Haftung Halbleiterlaser und materialbearbeitungsverfahren mit einem halbleiterlaser
DE102019211070B3 (de) * 2019-07-25 2020-12-10 Robert Bosch Gmbh Fertigungsverfahren zum Verschweißen eines Kupferleiters mit einem Werkstück, Werkstück und Fahrzeug
DE102019214891A1 (de) * 2019-09-27 2021-04-01 Trumpf Laser- Und Systemtechnik Gmbh Verfahren zum Laserlöten, insbesondere von Stahlkarosserieteilen
DE102019215000A1 (de) * 2019-09-30 2021-04-01 Robert Bosch Gmbh Mikroschweißverfahren flexibler und dünner Folien, bspw. für den Einsatz in elektrischen und elektronischen Vorrichtungen
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KR20220116275A (ko) * 2019-12-30 2022-08-22 누부루 인크. 레이저를 사용한 금속 용접시 발생하는 유해 부산물을 감소시키기 위한 방법 및 시스템
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