Investigation on ultrasonic crossjet for laser welding
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Corresponding author:
XIAO Rong-shi, rsxiao@bjut.edu.cn
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Received Date:
2005-01-07
Accepted Date:
2005-03-01
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Abstract
In laser beam welding,an appropriate crossjet nozzle should be mounted under the welding head in order to protect the optics from the welding spatter and smoke.An ultrasonic crossjet with a non-symmetric Laval cavity is designed based on the aerodynamic theory.Schlieren trial show that a rigid flow with a small divergence is obtained,and no disturbing near the flow can be observed.Welding experiments prove that focusing mirror is well protected when such a crossjet is used.
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References
|
[1]
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SUTLIFF D R,MCCAY T D,MCCAY M H et al.A laser welding nozzle for beam delivery optics protection[J].Welding Journal,1992,71(6):219～224. |
|
[2]
|
WANG H L,HUANG W L,ZHOU Zh Y et al.Laser welding of 8mm thick stainless steel plates[J].Chinese Journal of Lasers,2003,30(5):463～466 (in Chinese). |
|
[3]
|
LUO T Q.Hydromechanics[M].Beijing:China Machine Press,2000.191～204(in Chinese). |
|
[4]
|
WEN H X,LIU Y Q,DANG X A.The erection of the curve equation of the Laval nozzle and its numerical-controlled processing[J].Journal of Northwest Institute of Light Industry,1997,15 (4):7～11 (in Chinese). |
|
[5]
|
XIAO A H.Laval nozzle used in the positive pneumatic conveying system[J].Journal of Wuhan Polytechnic University,2002 (4):31～32(in Chinese). |
|
[6]
|
PENG Y Ch,LIAO X,MO F B.Theoretic study on gas flow in de laval nozzles of different configurations[J].Research on Iron Steel,1999(2):43～45(in Chinese). |
|
[7]
|
LI Ch M.Study on the fluid field of full-length rail's quenching cooling to quality assurance[D].Beijing:Northern Jiaotong University,2001.24～33 (in Chinese). |
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