Investigation into microforming based on laser-assisted heating

WANG Yun; ZHANG Kai; DONG Pei-long; Yuan Guo-ding; CAI Lan

In order to solve the forming difficulty occurring in the microforming microparts made of hard-to-deform materials, the experimental study on laser-assisted heating of the micropart of aluminum alloy was performed by means of pulsed laser.With the help of ABAQUS finite element software, the coupled thermomechanical finite element model of microupset was built up based on laser-assisted heating method.Then the temperature distribution of the workpiece and microforming process were simulated and analyzed.The results show that the temperature field distributions are oval and flatting with the certain laser parameters (laser power is 800mW,heating time is 0.08s and spot radius is 0.1mm), and that the temperature distribution is uniform after a very short time.The microforming stress using laser-heating method decreased about 30% compared with that of room temperature.The obtained results are helpful to improve the microforming properties of plastic materials and perfect micro-hot and microwarm forming process.

1. School of Mechanical Engineering College, Jiangsu University, Zhenjiang 212013, China

Received Date: 2008-01-03

Accepted Date: 2008-01-21

Available Online: 2009-04-25

Abstract: In order to solve the forming difficulty occurring in the microforming microparts made of hard-to-deform materials, the experimental study on laser-assisted heating of the micropart of aluminum alloy was performed by means of pulsed laser.With the help of ABAQUS finite element software, the coupled thermomechanical finite element model of microupset was built up based on laser-assisted heating method.Then the temperature distribution of the workpiece and microforming process were simulated and analyzed.The results show that the temperature field distributions are oval and flatting with the certain laser parameters (laser power is 800mW,heating time is 0.08s and spot radius is 0.1mm), and that the temperature distribution is uniform after a very short time.The microforming stress using laser-heating method decreased about 30% compared with that of room temperature.The obtained results are helpful to improve the microforming properties of plastic materials and perfect micro-hot and microwarm forming process.

HTML

Reference (10)

[1]	LI J T,DONG X H,HUANG J H.Progress in microforming[J].Journal of Plasticity Engineering,2004,11(4):1-8(in Chinese).
[2]	WANG Y,ZHOU J Zh,DAI Y Ch,et al.Application of micro forming technology in plastic processing[J].Forging Stamping Technology,2004,30(6):81-86(in Chinese).
[3]	MAGEE J,WATKINS K G,STEEN W M.Advances in laser forming[J].Journal of Laser Applications,1988,10(6):235-246.
[4]	KRATKY A,LIEDL G,BIELAK R.Laser assisted deep drawing[J].Laser Assisted Machining,2004(4):1125-1134.
[5]	LIU W K,CAO J,LU H Sh,et al.A multi-scale simulation of microforming process with RKEM[J].Materials Processing and Design:Modeling,Simulation and Application,2004,712(34):103-108.
[6]	XU G L,WANG X M.Engineering heat transfer[M].Beijing:China Electric Power Press,2005:236-237(in Chinese).
[7]	LKEUCHIK M F,LIAO J.Weld HAZ toughness and its improvement of low alloy steel SQV-2A for pressure vessels[J].Transactions of Joining and Welding Research Institute,1993,22 (2):215-221.
[8]	TIAN D,KARJALAINEN L P,NETAL Q B.Cleavage fracture model for granular bainite in simulated coarse-grained heat-affected zones of high-strength low-alloyed steels[J].JSME International Journal Series,1997,40(2):179-188.
[9]	LIU Sh H,JI Q J,YANG J.Numerical simulation on laser bending of steel tubes[J].Laser Technolgoy,2006,30(4):355-359(in Chinese).
[10]	WANG Y,TAN J G,YANG L J.The experimental study on laser bending of sheet metals[J].Journal of Optoelectronics·Laser,2003,14(4):415-418(in Chinese).

Investigation into microforming based on laser-assisted heating

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Proportional views