Laser-MAG复合焊接中热源相对位置对焊缝成型的影响
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摘要
Laser-MAG复合焊接具有焊接速度快、自动化程度高、焊接热变形小等优点,是船舶焊接技术发展的重要方向。采用Laser-MAG复合焊接方式,通过改变两种热源的相对位置,对10mm厚船用高强钢EH36进行了堆焊试验。研究了激光引导电弧(L-A)和电弧引导激光(A-L)两种行走方式以及激光与电弧之间夹角大小对焊缝成型的影响。结果表明,Laser-MAG复合焊接中,A-L焊接方式相较L-A焊接方式对焊缝表面成型更有利,成形更均匀,但飞溅量更大,其焊缝熔宽较小,熔深较大;无论是LA还是A-L焊接方式下,焊枪与竖直方向夹角越大,焊缝成型越不稳定、飞溅量越大,但焊缝熔深几乎不受其影响。
Laser-MAG hybrid welding has the advantages of fast welding speed,high degree of automation,and small thermal deformation,which is an important direction for the ship welding technology development.10 mm thick marine high-strength steel EH36 was surfacing test that using the Laser-MAG hybrid welding method by changing the relative position of the two heat sources.The effects of laser guided arc(L-A)and arc-guided laser(A-L)two walking modes and the angle between laser and arc on the weld formation were studied.The results show that compared with L-A welding,the A-L welding method is more favorable for forming the surface of the weld in Laser-MAG hybrid welding,the forming is more uniform,but the amount of spatter is larger,the weld width is smaller and the penetration depth is larger.Regardless of the L-A or A-L welding mode,welding torch and vertically angle is greater,the more unstable weld formation,the greater the amount of spatter,but the weld penetration is hardly affected.
Laser-MAG hybrid welding has the advantages of fast welding speed,high degree of automation,and small thermal deformation,which is an important direction for the ship welding technology development.10 mm thick marine high-strength steel EH36 was surfacing test that using the Laser-MAG hybrid welding method by changing the relative position of the two heat sources.The effects of laser guided arc(L-A)and arc-guided laser(A-L)two walking modes and the angle between laser and arc on the weld formation were studied.The results show that compared with L-A welding,the A-L welding method is more favorable for forming the surface of the weld in Laser-MAG hybrid welding,the forming is more uniform,but the amount of spatter is larger,the weld width is smaller and the penetration depth is larger.Regardless of the L-A or A-L welding mode,welding torch and vertically angle is greater,the more unstable weld formation,the greater the amount of spatter,but the weld penetration is hardly affected.
引文
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[2]TUSEK J,SUBAN M.Hybrid welding with arc and laser beam[J].Science and Technology of Welding and Joining,2013,4(5):308-311.
[3]王金刚,黄根哲,候丹丹,等.高强钢激光-电弧复合焊接接头微观组织与显微硬度分布规律的研究[J].应用激光,2016,36(3):306-310.
[4]刘万强,李彦清,刘凤德,等.激光-电弧复合焊熔滴过渡的受力行为研究[J].应用激光,2016,36(4):408-413.
[5]王天骄,王春明,胡佩佩,等.窄间隙条件下激光-电弧复合焊接稳定性研究[J].应用激光,2012,32(6):501-504.
[6]VOLLERTSEN F,THOMY C.Welding with fiber laser from 200to 17 000W[C]//Section D-ICALEO,Miami,Florida,USA,2005:254-263.
[7]IPG Photonics Corporation.High power fiber lasers for industrial application[EB/OL].(2002-12-14)[2010-04-08].http://www.ipgbeijing.com/Collateral/Documents/English-US/HPBroshure.pdf.
[8]BAGGER C,OLSEN F O.Review of laser hybrid welding[J].Journal of Laser Application,2004,17(1):2-14.
[9]GAO M,ZENG X Y,YAN J,et al.Heat sources interaction of laser-arc hybrid welding[J].Laser Technology,2007,31(5):465-468.
[10]BEYER E.New aspects in laser welding with an increased efficiency[C]//Section D-ICA LEO,Orlando,USA,Laser Institute of America,1994(79):183-92.
[11]LEI ZHENGLONG,CHEN YANBIN,LI LIQUN,et al.Characteristics of drop let transfer in CO2laser-MIGhybrid welding with projected mode[J].Applied Laser,2004,24(6):361-364.
[12]WANG XUYOU,WANG WEI,LIN SHANGYANG,et al.Two factors influencing welding process stability of Nd:YAG laser-short circuit arc MAG hybrid welding[J].Transactions of the China Welding Institution,2010,31(3):17-20.
[13]LIU L M,YUAN S T,LI C B.Effect of relative location of laser beam and TIG arc in different hybrid welding modes[J].Science and Technology of Welding and Joining,2012,17(6):441-446.
[14]KAN P,SALMINEN A,MARTIKAAINEN J.The effect of the relative location of laser beam with arc in different hybrid welding processes[C]//28th International Congress on Applications of Lasers&ElectroOptics,Orlando,Florida,USA,2010,3(83):68-73.
[15]邵奇深,张宏,刘凤德,等.激光-电弧复合焊接热源布置方式对焊缝组织和性能的影响[J].材料热处理学报,2015,8(36):66-72.