Effect of align deviation value on fiber laser welding property of automotive galvanized steel
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1.
State Key Laboratory of Advanced Design and Manufacturing for Body, Hunan University, Changsha 410082, China;
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2.
Laser Research Institute, Hunan University, Changsha 410082, China
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Received Date:
2011-12-18
Accepted Date:
2011-12-26
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Abstract
In order to study effect of the align deviation value on welding property of automotive galvanized steel based on fiber laser welding,the orthogonal test was adopted to obtain the best ideal parameters without align deviation.Weld topography and cross section of different align deviation value were analyzed,micro-hardness,mechanical properties and micro-structure of weld were tested,and the effect of different butt joint gaps on the critical align deviation value was analyzed.The results show that when the align deviation value is less or equal to 0.30mm(about 17% of sheet thickness),the weld topography is even and continuous.Micro-hardness in the fusion zone and heat affected zone is higher than that in the base material,the tensile strength of fusion zone is better than that of the base material.The change of the align deviation value does not have much impact on the micro-structure of weld.The butt joint gap has obvious influence on the critical align deviation value.
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References
[1]
|
TIAN H B,LIN J P,LIU R T,et al.A review on ultralight auto body and related forming technologies[J].Automotive Engineering,2005, 27(3):381-384(in Chinese). |
[2]
|
WU Q,XU L Y,CHEN G Y,et al.Experimental study about CO2 laser welding of galvanized sheet[J].Laser Technology,2007,31 (6):571-574(in Chinese). |
[3]
|
ZUO T C,WANG X B.Characteristic short technological process of laser manufacturing[J].Chinese Journal of Lasers,2008,35(11):1160-1663(in Chinese). |
[4]
|
WANG J C.Development and expectation of laser welding technology[J].Laser Technology,2001,25(1):48-54(in Chinese). |
[5]
|
CHEN G Y,MEI L F,ZHANG M J,et al.Application and research of laser processing automobile body manufacturing[J].Laser&Optoelectronics Progress,2009(9):17-23(in Chinese). |
[6]
|
XIN L M,ZHAO M Y,XU Z G.Misalignment production and its prediction model in tailored blank laser welding[J].Transactions of the China Welding Institution,2008,29(11):89-92(in Chinese). |
[7]
|
CHEN G Y,WANG Z J,MEI L F,et al.Effect of laser incident angles on welding performance of galvanized sheet for vehicle body[J].Laser Technology,2010,34(6):729-732(in Chinese). |
[8]
|
MA G Y,WU D J,WANG Z H,et al.Weld joint forming of thin hastelloy C-276 sheet of pulsed laser welding[J].Chinese Journal of Lasers,2011,38(6):0603014/1-0603014/5(in Chinese). |
[9]
|
LI Y L,HUANG J,GAO Z G,et al.Structure and properties of high power laser welding of high strength steel B450LAD for vehicles[J].Chinese Journal of Lasers,2008,35(12):2047-2051(in Chinese). |
[10]
|
FANG H S,YANG Z G,YANG J B,et al.Research on bainite transformation in steels[J].Acta Metallurgica Sinica,2005,41 (5):449-457(in Chinese). |
[11]
|
DONG X C,ZHANG X,CHEN Y Q,et al.Weldability of quenched and tempered bainite Q550D heavy plate steel[J].Electric Welding Machine,2010,40(9):58-61(in Chinese). |
[12]
|
LIU Z C,REN H P.Diffusion phase transformation of supercooled austenite[M].Beijing:Science Press,2007:295-306(in Chinese). |
[13]
|
CHEN G Y,CHENG F,ZHANG Y,et al.Effect of butt joint gap to high-strength automobile steel of fiber laser welding[J].Chinese Journal of Lasers,2011,38(6):0603013(in Chinese). |
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Proportional views
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