Volume 7 Issue 1
Jan.  2014
Turn off MathJax
Article Contents
HERMSDORF J?rg, KAIERLE Stefan. Benefits of optogalvanic effect and beam shaping for laser stabilized GMA welding[J]. Chinese Optics, 2014, 7(1): 112-117. doi: 10.3788/CO.20140701.0112
Citation: HERMSDORF J?rg, KAIERLE Stefan. Benefits of optogalvanic effect and beam shaping for laser stabilized GMA welding[J]. Chinese Optics, 2014, 7(1): 112-117. doi: 10.3788/CO.20140701.0112

Benefits of optogalvanic effect and beam shaping for laser stabilized GMA welding

Funds:

German Federal Ministry of Education and Research(BMBF) within the Framework Concept Research for Tomorrow's Production(No.02PB2051);Project Management Agency Forschungszentrum Karlsruhe,Production and Manufacturing Technologies Division(PTKA-PFT)

  • Received Date: 11 Oct 2013
  • Rev Recd Date: 13 Dec 2013
  • Publish Date: 25 Jan 2014
  • To develop and refine the laser guided and stabilized(LGS) welding process, the conductivity of the electric arc must be maximized using laser radiation. The optogalvanic effect(OGE) is the leading factor in controlling it, and if optimized it will lead to the stabilization of the electric arc. The OGE raises the probability of ionization of the particles in the plasma, and thus, the conductivity of the electric arc. The interaction between the photons of the laser and the Argon atoms through electron-atom collisions create charged particles. The higher the rate of ionization is, the higher the conductivity of the electric arc. Many tests were conducted to discover how to make best use of this effect. The position of the focus of the beam in relation to the work piece, the shape of the beam, and the laser wavelength used were all taken into account.

     

  • loading
  • [1] STUTE U,KLING R,HERMSDORF J. Interaction between electrical arc and Nd:YAG laser radiation[J]. Annals of the CIRP,2007,56(1):197-200. [2] HERMSDORF J,OTTE F,KLING R. Development of the LGS-GMA welding process[C]. Proceedings of the Fifth International WLT-Conference on Lasers in Manufacturing,Munich,June 2009. [3] CUI H. Untersuchungen der Wechselwirkung zwischen Schweisslichtbogen und fokussiertem Laserstrahl und der Anwendungsmoeglichkeit kombinierter Laser-Lichtbogentechnik; GKSS-Forschungszentrum Geesthacht GmbH 1991, ISSN0344-9629. [4] CUI H,DECKER I,PURSCH H,RUGE J,WENDELSTORF J,WOHLFAHRT H. Laserinduziertes Fokussieren des WIG-Lichtbogens[J]. Schweiβen und Schneiden. DVS-Bericht,1992(146):139-143. [5] KIM J K,LIM H S,CHO J H,KIM C H. Bead-on-plate weldability of Al 5052 alloy using a disk laser[J]. AMME,2008,28(2):189. [6] ZHU X,NUR A H,MISRA P. Laser optogalvanic wavelength calibration with a commercial hollow cathode iron-neon discharge lamp[J]. Spectroscopy Radiation Transfer,1994,52(2):167-17. [7] GOLDSMITH J E M,LAWLER J E. Optogalvanic spectroscopy[J]. Contemp. Phys.,1981,22(2):235-248 [8] NIST.Physical Measurement Laboratory.[2013-09-17].[EB/OL].http://physics.nist.gov.
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索
    Article views(1938) PDF downloads(718) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return