ATE477576T1 - DEVICE AND METHOD FOR WELDING BAND CONNECTIONS BETWEEN THE INNER GRID BANDS OF A LASER TOOL WITH SPACER GRID AND SPACER GRID PRODUCED THEREFROM - Google Patents

DEVICE AND METHOD FOR WELDING BAND CONNECTIONS BETWEEN THE INNER GRID BANDS OF A LASER TOOL WITH SPACER GRID AND SPACER GRID PRODUCED THEREFROM

Info

Publication number
ATE477576T1
ATE477576T1 AT07290306T AT07290306T ATE477576T1 AT E477576 T1 ATE477576 T1 AT E477576T1 AT 07290306 T AT07290306 T AT 07290306T AT 07290306 T AT07290306 T AT 07290306T AT E477576 T1 ATE477576 T1 AT E477576T1
Authority
AT
Austria
Prior art keywords
grid
reduced
spacer grid
spacer
laser tool
Prior art date
Application number
AT07290306T
Other languages
German (de)
Inventor
Kee Nam Song
Soo Sung Kim
Kun Woo Song
Original Assignee
Korea Atomic Energy Res
Korea Hydro & Nuclear Power Co
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
Application filed by Korea Atomic Energy Res, Korea Hydro & Nuclear Power Co filed Critical Korea Atomic Energy Res
Application granted granted Critical
Publication of ATE477576T1 publication Critical patent/ATE477576T1/en

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
    • B23K26/24—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
    • B23K26/02—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
    • B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
    • B23K26/0643—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising mirrors
    • 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
    • B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
    • B23K26/0648—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising lenses
    • 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
    • B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
    • B23K26/0652—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising prisms
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
    • G21C3/30—Assemblies of a number of fuel elements in the form of a rigid unit
    • G21C3/32—Bundles of parallel pin-, rod-, or tube-shaped fuel elements
    • G21C3/34—Spacer grids
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Laser Beam Processing (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

Disclosed are an apparatus and method for welding strap connections between inner grid straps of a spacer grid using a laser tool, and a spacer grid manufactured by the same, in which the strap connections between the inner grid straps of the spacer grid are seam-welded continuously or intermittently using the laser tool, so that the structural strength of the spacer grid is increased, a spattering phenomenon, in which a welded material is spattered during welding, is reduced, and thermal deformation is reduced. Further, fine welding is possible, and thus the welded bead of each strap connection between the inner grid straps can have a small size, and the number of welding defects can be reduced. In addition, the flow resistance of a coolant is reduced, and thereby the pressure drop of thecoolant can be reduced. As a result, the load on a flow pump for the coolant can be reduced, and economic efficiency and safety can be improved.
AT07290306T 2006-05-19 2007-03-12 DEVICE AND METHOD FOR WELDING BAND CONNECTIONS BETWEEN THE INNER GRID BANDS OF A LASER TOOL WITH SPACER GRID AND SPACER GRID PRODUCED THEREFROM ATE477576T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20060045190 2006-05-19
KR1020060081049A KR100770944B1 (en) 2006-05-19 2006-08-25 Welding apparatus and welding method of internal lattice of support lattice using laser mechanism and support lattice manufactured accordingly

Publications (1)

Publication Number Publication Date
ATE477576T1 true ATE477576T1 (en) 2010-08-15

Family

ID=38816108

Family Applications (1)

Application Number Title Priority Date Filing Date
AT07290306T ATE477576T1 (en) 2006-05-19 2007-03-12 DEVICE AND METHOD FOR WELDING BAND CONNECTIONS BETWEEN THE INNER GRID BANDS OF A LASER TOOL WITH SPACER GRID AND SPACER GRID PRODUCED THEREFROM

Country Status (5)

Country Link
JP (1) JP4647627B2 (en)
KR (1) KR100770944B1 (en)
CN (1) CN101073856B (en)
AT (1) ATE477576T1 (en)
DE (1) DE602007008317D1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1393010B1 (en) * 2009-03-31 2012-04-11 Laservall Spa LASER WELDING SYSTEM
KR101081558B1 (en) 2009-11-17 2011-11-08 한전원자력연료 주식회사 Apparatus for removing tab of weldign spacer grid of nuclear fuel rod
JP2014079768A (en) * 2012-10-15 2014-05-08 Toshiba Corp Welding method and welding device
CN110076456A (en) * 2019-05-29 2019-08-02 浙江晶科能源有限公司 A kind of photovoltaic welder, photovoltaic module manufacturing equipment and solar battery
KR102822907B1 (en) 2023-07-26 2025-06-19 한전원자력연료 주식회사 Spot welding fixture for a spacer grid of a nuclear fuel assembly

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2535638B1 (en) * 1982-11-09 1985-09-06 Fragema Framatome & Cogema METHOD AND INSTALLATION FOR WELDING GRIDS FOR NUCLEAR FUEL ASSEMBLY
US4825032A (en) * 1987-08-31 1989-04-25 Westinghous Electric Corp. Workpiece handling assembly
FR2647944B1 (en) 1989-06-02 1993-12-10 Framatome FUEL ASSEMBLY OF A NUCLEAR REACTOR COMPRISING A DEVICE FOR RETAINING PARTICLES CONTAINED IN THE REACTOR COOLING FLUID
US5221515A (en) * 1990-05-07 1993-06-22 Franco-Belge De Fabrication De Combustible Method for manufacturing grids for a nuclear fuel assembly
US5179261A (en) * 1991-09-17 1993-01-12 Combustion Engineering Inc. Split beam laser welding system
JPH079171A (en) * 1993-06-25 1995-01-13 Toshiba Corp Inner surface laser surface treatment equipment
JPH0866782A (en) * 1994-08-29 1996-03-12 Mitsubishi Nuclear Fuel Co Ltd Joining method of lattice member and joining device
FR2736191B1 (en) * 1995-06-29 1997-09-26 Franco Belge Combustibles METHOD AND INSTALLATION FOR WELDING A GRID-SPACER OF A FUEL ASSEMBLY FOR A NUCLEAR REACTOR AND DEVICE FOR WELDING FROM THE INSIDE OF A GRID
FR2736192B1 (en) 1995-06-29 1997-09-26 Franco Belge Combustibles METHOD AND DEVICE FOR WELDING INTERLOCATED PLATES OF A SPACER GRILLE OF A FUEL ASSEMBLY FROM THE EXTERIOR OF THE GRID
JP2001191189A (en) * 1999-12-28 2001-07-17 Sony Corp Laser beam welding equipment
KR100390013B1 (en) 2000-10-05 2003-07-04 한국원자력연구소 Apparatus of laser welding for attachment of bearing pads of nuclear fuel elements
CN2712532Y (en) * 2004-06-15 2005-07-27 武汉楚天激光（集团）股份有限公司 Multiaxial support for optical fiber laser head
KR100489306B1 (en) 2004-07-15 2005-05-17 주식회사 아이엠티 Laser articulated arm system

Also Published As

Publication number Publication date
DE602007008317D1 (en) 2010-09-23
JP2007307613A (en) 2007-11-29
KR100770944B1 (en) 2007-10-26
CN101073856A (en) 2007-11-21
CN101073856B (en) 2010-05-26
JP4647627B2 (en) 2011-03-09

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