Analysis of the temperature field induced by laser strengthening
-
1.
Key Laboratory of Advanced M anufacturing Technology, Beijing University of Technology, Beijing 100022, China;
-
2.
School of Mechanical Engineering, Beijing University of Science and Technology, Beijing 100083, China;
-
3.
Beijing Oriental Enterprise, Beijing 100016, China;
-
4.
Department of Mechanical, Tangshan Institute, Tangshan 063000, China
-
Received Date:
2004-09-20
Accepted Date:
2004-11-17
-
Abstract
The effect of laser surface strengthening is determined by the thermal circular principle.In order to obtain the reasonable quenching depth and distribution of the micro-hardness,the temperature field resulted from the laser strengthening must be analyzed exactly.The influence of the scanning parameters on the temperature field induced by the laser can be analyzed through the FEM.At the same time,the result form the simulation can be verified with the infrared measuring method.Finally,the conclusion can be drawn that the microstructure of the material surface can be improved effectively by the laser strengthening technology and the thermal circular principle can be affected by the change of the process parameters.
-
-
References
|
[1]
|
LI J Ch,LI X Y.Fast calculation of thermal action of actual beam during the laser heat treatment[J].Chinese Journal of Materials Research,1998,12(3):262～266(in Chinese). |
|
[2]
|
SHI X Q,WANG D Ch.Simulation on laser heat treatment[J].Applied Laser,2001,21(3):172～174(in Chinese). |
|
[3]
|
ZENG D W,XIE Ch Sh.A numerical simulation for three dimensional quasi2state fluid flow field and temperature field in molten pool for composite coating system[J].Laser Technology,2000,24(6):370～374(in Chinese). |
|
[4]
|
LI M H,LIU A G,SONG Y Z.A numerical simulation for temperature and thermal stress distribution in Nd:YAG amplifiers[J].Laser Technology,2002,26(2):86～89(in Chinese). |
|
[5]
|
YAO G F,CHEN G N,ZHANG L W.Numerical simulation of 3-Dthermal field with phase transformation[J].Heat Treatment of Metals,2002,27(5):14～16(in Chinese). |
|
[6]
|
BOKOTA A,ISKIERKA S.Numerical prediction of the hardened zone in laser treatment of carbon steel[J].ACTA Materialia,1996,44(2):445～450. |
|
[7]
|
YILBAS B S.Analytical solution for time unsteady laser pulse heating of semi-infinite solid[J].International Journal of Mechanical Sicences,1997,39(6):671～682. |
-
-
Proportional views
-
Map
DownLoad: