光电偶效应和光束整形对激光稳定气体保护焊接的增益

HERMSDORF J?rg; KAIERLE Stefan

doi:10.3788/CO.20140701.0112

Volume 7 Issue 1

Jan. 2014

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Chinese Optics > 2014 > 7(1): 112-117.

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

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

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

doi: 10.3788/CO.20140701.0112

HERMSDORF J?rg,
KAIERLE Stefan^,

Laser Zentrum Hannovere.V., Hannover 30419, Germany

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

Abstract

Abstract

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.
- optogalvanic effect,
- laser guided and stabilized welding,
- Rayleigh length

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References(1)

References

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