中国激光, 2012, 39 (1): 0103008, 网络出版: 2012-01-06   

光纤激光入射角对高强钢对接焊焊接性能的影响

Effects of Incident Angle on Welding Performance of Fiber Laser Butt Welding of High-Strength Automobile Steel
作者单位
1 湖南大学汽车车身先进设计制造国家重点实验室, 湖南 长沙 410082
2 湖南大学激光研究所, 湖南 长沙 410082
摘要
研究了光纤激光入射角变化对车用高强钢(B340/590DP)对接焊焊接性能的影响\.采用前期试验得出的激光垂直入射状态下的最优焊接参数,在该最优参数条件下,利用4 kW光纤激光器进行了1.6 mm厚的双相B340/590DP不同入射角条件下的对接焊试验。分析入射角变化对焊接件外观形貌、焊缝截面、力学性能和微观组织的影响。试验结果表明:激光入射角小于40°时焊缝外观形貌良好,组织细密均匀,能承受较大的拉剪载荷且拉剪试验均断裂在母材区;入射角大于40°时,焊缝背面形成单边焊。
Abstract
The effects of incident angle on welding performance of fiber laser butt welding of high-strength automobile steel are researched. The ideal parameters obtained by the previous test is used. The 4 kW fiber laser is used to weld the dual-phase high-strength steel B340/590DP with the thickness of 1.6 mm at different incident angles with a butt joint. Then the effects of incident angle on the weld topography, cross section topography, tension and shearing property and micro-structure are analyzed. The results show that good weld topography, fine micro-structure and greater tension and shearing property can be obtained when the laser beam incident angle is less than 40°. When the incident angle is more than 40°, the single-sided weld is obtained on the back of the bead.
参考文献

[1] Lifang Mei, Genyu Chen, Xiangzhong Jin et al.. Research on laser welding of high-strength galvanized automobile steel sheets[J]. Opt. & Lasers in Engng., 2009, 47(11): 1117~1124

[2] N. Farabia, D. L. Chen, J. Lib et al.. Microstructure and mechanical properties of laser welded DP600 steel joints[J]. Mater. Sci. & Engng. A, 2010, 527(4-5): 1215~1222

[3] 伍强, 陈根余, 王贵 等. 高强度镀锌钢的CO2激光焊接[J]. 中国激光, 2006, 33(8): 1133~1138

    Wu Qiang, Chen Genyu, Wang Gui et al.. CO2 laser welding of zinc coated high strength steel[J]. Chinese J. Lasers, 2006, 33(8): 1133~1138

[4] 陈根余, 王祖健, 杨丽芳 等. 激光入射角度对车身用镀锌板焊接性能的影响[J]. 激光技术, 2010, 34(6): 729~732

    Chen Genyu, Wang Zujian, Yang Lifang et al.. Effect of laser incident angles on welding performance of galvanized sheet for vehicle body[J]. Laser Technology, 2010, 34(6): 729~732

[5] 陈根余, 陈飞, 康斌 等. 对接间隙对车用高强钢光纤激光焊接的影响[J]. 中国激光, 2011, 38(6): 0603013

    Chen Genyu, Chen Fei, Kang Bin et al.. Effect of butt joint gap to high-strength automobile steel of fiber laser welding[J]. Chinese J. Lasers, 2011, 38(6): 0603013

[6] 李亚玲, 黄坚, 高志国 等. 高功率激光焊接汽车用高强钢B450LAD组织与性能[J]. 中国激光, 2008, 35(12): 2047~2051

    Li Yaling, Huang Jian, Gao Zhiguo et al.. Structure and properties of high power laser welding of high strength steel B450LAD for vehicles[J]. Chinese J. Lasers, 2008, 35(12): 2047~2051

[7] T. Han, S. S. Park, K. Kim et al.. CO2 laser welding characteristics of 800 MPa class TRIP steel[J]. ISIJ Int, 2005, 45(1): 60~65

[8] 刘继恒, 赵明, 吴秀贞 等. ZG25钢中魏氏组织对力学性能的影响[J]. 金属热处理学报, 1985, 6(1): 19

    Liu Jiheng, Zhao Ming, Wu Xiuzhen et al.. The influence on the mechanical properties of Widmanstatten in ZG25[J]. Metal Heat Treatment, 1986, 6(1): 19

[9] 刘继恒, 赵明, 钱汉英 等. 魏氏组织F的亚结构及其对裂纹扩展的影响[J]. 金属学报, 1986, 22(5): A448

    Liu Jiheng, Zhao Ming, Qian Hanying et al.. Widmanstatten F sub-structure and its influence on crack propagation[J]. Metal Technology, 1986, 22(5): A448

陈根余, 康斌, 张屹, 李时春, 谭力鹏. 光纤激光入射角对高强钢对接焊焊接性能的影响[J]. 中国激光, 2012, 39(1): 0103008. Chen Genyu, Kang Bin, Zhang Yi, Li Shichun, Tan Lipeng. Effects of Incident Angle on Welding Performance of Fiber Laser Butt Welding of High-Strength Automobile Steel[J]. Chinese Journal of Lasers, 2012, 39(1): 0103008.

本文已被 4 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!