Effect of laser beam mode on laser quenching process
-
1.
The MOE Key Laboratory of Mechanic Manufacture and Automation, Research Center of Laser Processing Technology and Engineering, Zhejiang University of Technology, Hangzhou 310014, China
-
Corresponding author:
YAO Jian-hua, laser@zjut.edu.cn
;
-
Received Date:
2007-11-13
Accepted Date:
2008-01-06
-
Abstract
In order to examine the variation of CO2 laser beam mode profile,and analyze the effect of different laser modes on the uniformity of quenching hardened layers,a pyroelectric camera-based industrial inline laser beam analyzer was installed to monitor the laser beam profiles in real-time during the laser quenching process. Results showed that due to the ununiformity of the laser power intensity in spatial distribution, the depth of the hardened layer at either side of the beam spot differed obviously. In addition,it was found the microstructures of laser quenching layers were dominated by laser beam modes and uniform power distribution resulted in uniform microstructures.
-
-
References
|
[1]
|
LI J Ch.Study of laser heat treatment and optimized control[M].Beijing:Metallurgical Industry Press,1995:1(in Chinese). |
|
[2]
|
WANG Z Y,LIU J T,HIRAK D M,et al.Meamurement of pulsed laser beam dimensions using KAPTON films[C]//Proceedings of the Laser Materials Processing Symposium-ICALEO 1991.Toledo:Laser Institute of America.1992:74-83. |
|
[3]
|
HIRAK D M,WECHKMAN D C,KERR H W.Measuring the spatial intensity distribution of high-power focused laser beams using a tornting-wire type laser beam analyzer[J].Measurement Science Technology,1994,5(12):1523-1532. |
|
[4]
|
WANG Y Q,AN Ch W,GAO Sh Zh,et al.A monitor for real time measurements of laser power and modes[J].Chinese Journal of Lasers,1999,26(1):26-30(in Chinese). |
|
[5]
|
LI Sh,HU O W,ZENG X Y.Effect of laser mode on the quality of laser cladding layers[J].Laser Technology,2005,29(6):667-669(in Chinese). |
|
[6]
|
WU G,SONG G M,HUANG W J.Influence of laser processing psrameters on the ease-depth and the hardness[J].Laser Technology,2007,31(2):163-166(in Chinese). |
|
[7]
|
XIANG X Y,CHEN H Q,WU P,et al.Adaptive measuring algorithm of laser beam width based on CCD[J].Laser Technology,2006,30 (5):552-555(in Chinese). |
|
[8]
|
YANG Sh M,TAO W O.Heat conduction[M].4th ed.Beijing:Higher Education Press,2006:8(in Chinese). |
|
[9]
|
YAN Zh,SONG G M,WU G.Inhomogeneous laser hardened layer and its control[J].Heat Treatment,2006,21(1):10-14(in Chinese). |
|
[10]
|
LIU Y X.Principle of metal heat treatment[M].Beijing:China Machine Press,1981:212(in Chinese). |
-
-
Proportional views
-
Map
DownLoad: