5083铝合金光纤激光填丝焊焊接工艺研究
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摘要
采用5183焊丝作为填充材料,对3mm厚的5083铝合金对接接头进行光纤激光填丝焊接实验。分析了离焦量、焊接速度、送丝速度和激光功率对焊缝成型及强度的影响,并对最优焊缝进行了金相组织、显微硬度、力学性能的检测分析。结果表明,采用离焦量0mm,激光功率4 100 W,焊接速度4.2m/min,送丝速度3m/min的工艺参数焊接3mm厚5083铝合金,可获得高质量焊缝,焊缝硬度达HV 60以上,未出现接头软化,拉伸试验断裂位置为母材,焊缝强度高于母材。
3 mm thick 5083 aluminum alloy butt joints are welded by fiber laser using 5183 filler wire.The effects of defocus amount,welding speed,wire feeding speed and laser power on weld forming and strength were analyzed.The microstructure,microhardness and mechanical properties of optimal welds were examined and analyzed.The results show that high-quality welds can be obtained by welding 3 mm thick 5083 aluminum alloy with 0 mm defocusing,4 100 Wlaser power,4.2 m/min welding speed and 3 m/min wire speed.The hardness of weld is above HV 60 without joint softening,the fracture of tensile test occurred on the base metal,the weld strength is higher than that of the base metal.
3 mm thick 5083 aluminum alloy butt joints are welded by fiber laser using 5183 filler wire.The effects of defocus amount,welding speed,wire feeding speed and laser power on weld forming and strength were analyzed.The microstructure,microhardness and mechanical properties of optimal welds were examined and analyzed.The results show that high-quality welds can be obtained by welding 3 mm thick 5083 aluminum alloy with 0 mm defocusing,4 100 Wlaser power,4.2 m/min welding speed and 3 m/min wire speed.The hardness of weld is above HV 60 without joint softening,the fracture of tensile test occurred on the base metal,the weld strength is higher than that of the base metal.
引文
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[2]姚君山.铝及铝合金的焊接[M].北京:机械工业出版社,2006:351-362.
[3]王成,张旭东,陈武柱,等.填丝CO2激光焊的焊缝成形研究[J].应用激光,1999,19(5):269-271.
[4]XIAO R,CHEN K,ZUO T,et al.Influence of the wire addition direction in CO2laser welding of aluminum[J].Proceedings of SPIE,2002,4915(4):128-137.
[5]许良红,田志凌,张晓牧,等.保护气体对高强铝合金的焊缝组织及气孔敏感性的影响[J].焊接学报,2006,27(12):69-73.
[6]CHEN KAI,XIAO RONGSHI,ZUO TIECHUAN,et al.Laser welding of Al-Mg alloy with the thin plate[J].Proceedings of SPIE,2005(5629):155-160.
[7]STEEN W M.Laser material processing[M].3rd ed.London:Springer-Verlag,2003:18-291.
[8]陈继民,徐向阳,肖荣诗.激光现代制造技术[M].北京:国防工业出版,2007:112-161.
[9]COSTE F,FABBRO R,SABATIER L.Application of vision to laser welding:Increase of operating tolerances using beam-oscillation and filler-wire[J].Laser Materials Processing Conference,Section C-ICALEO,1997:21-29.
[10]SUN Z,KUO M.Bridging the joint gap with wire feed laser welding[J].Journal of Materials Processing Technology,1999,87(1-3):213-222.
[11]孟云飞,王维新,李翠,等.304不锈钢光纤激光填丝焊焊接工艺研究[J].应用激光,2016,36(5):535-542.
[12]李力钧.现代激光加工及其装备[M].北京:北京理工大学出版社,1993:70-75.
[13]傅戈雁,石世宏,韩学磊.环形激光光内同轴送丝焊接试验研究[J].中国激光,2010,37(8):2080-2085.
[14]李俐群,陶汪,朱先亮.厚板高强钢激光填丝多层焊工艺[J].中国激光,2009,36(5):1251-1255.
[15]杜汉斌,胡伦骥,胡席远.激光填丝焊技术[J].航空制造技术,2002(11):60-63.