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ZHANG Xiao-hong, ZHANG Xu-dong, CHEN Wu-zhu, LEI Hua-dong. Prevention and mechanical analysis of porosity formation in pulsed CO2 laser welding of 30CrMnSiA[J]. LASER TECHNOLOGY, 2007, 31(4): 419-422.
Citation: ZHANG Xiao-hong, ZHANG Xu-dong, CHEN Wu-zhu, LEI Hua-dong. Prevention and mechanical analysis of porosity formation in pulsed CO2 laser welding of 30CrMnSiA[J]. LASER TECHNOLOGY, 2007, 31(4): 419-422.

Prevention and mechanical analysis of porosity formation in pulsed CO2 laser welding of 30CrMnSiA

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  • Received Date: June 01, 2006
  • Revised Date: August 28, 2006
  • Published Date: August 24, 2007
  • Porosity formation in high power laser welding,which is related to the characteristics of high power laser welding,is an important problem of welding quality.The pulsed CO2 laser welding was employed to prevent porosity in partial penetration.The experimental results reveal that the porosity ratio decrease with increasing pulse frequency when the pulse frequency is below 50Hz,and is nearly kept constant in the range of 50Hz~200Hz.Moderate increase of the duty ratio is benefit to the reduction of porosity.
  • [1]
    LEI H D,XU B,YIN J.Study on the weldability of the quenched and tempered 30CrMnSiA with laser beam welding[J].Laser Technology,2002,26(3):225~228(in Chinese).
    [1]
    Chinese Mechanical Engineering Society.Welding manual:materialweling[M].Beijing:China Machine Press,1992.184(in Chinese).
    [2]
    MATSUNAWA A,SETO N,JONG D K et al.Dynamics of keyhole and molten pool in high power CO2 laser welding[J].Proc SPIE,2000,3888:34~45.
    [3]
    TSUKAMOTO S,KAWAGUCHI I,ARAKANE G et al.Keyhole be-havior in high power laser welding[J].Proc SPIE,2002,4831:251~256.
    [4]
    MATSUNAWA A,KATAYAMA S.Understanding physical mech-anisms in laser welding for construction of mathematical model[J].Welding in the World,2002,46:27~38.
    [5]
    TSUKAMOTO S,KAWAGUCHI I,ARAKANE G et al.Suppression of porosity using pulsed modulation of laser power in 20kW CO2 laser welding[A].International Congress on Applications of Lasers & Electro-Optics[C].Orlando Florida:Laser Institute of America,2001,section C:1702.
    [6]
    KAWAGUCHI I,TSUKAMOTO S,HONDA H et al.Power modulation in deep penetration laser welding-optimization of frequency and waveform to prevent the porosity[A].International Congress on Applications of Lasers & Electro-Optics[C].Orlando Florida:Laser Institute of America,2003,section A:1006.
    [7]
    CHEN L,HU L J,GONG Sh L et al.Research on CO2 laser welding procedure of Ti3AlNb intermetallic compound[J].Welding & Joining,2004,12:10~13(in Chinese).
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