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Multi-pass Route Planning for Thick Steel Plate Using Laser Welding with Filler Wire

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Part of the Advances in Intelligent Systems and Computing book series (AISC,volume 363)


Laser welding with filler wire, performed by welding robots, provides high stability and efficiency for welding thick plates used in shipbuilding, electrical engineering and nuclear industry. The route planning methodology is of central importance in this process. Firstly, build a welding system suitable for thick plate laser building with filler wire. Then, establish a strategy on the principle that the cross section areas of the welding beads are equal under same welding parameters, parallelogram/trapezoid method is applied to plan the layers, number of beads for each layer, and the concrete position for each bead before the welding for both V-shape and trapezoid grooves. Auto-planning and visualization are achieved by programming. Furthermore, a specially designed method for welding capping layer, concerning the coverage of the edges of the groove, is introduced to perfect the joint quality. Finally, experimental test shows the effectiveness of this planning philosophy in laser welding with filler wire of thick plate. Testing results highly agree with the planning with only slight differences in both normal and capping layers. High quality leveling interface and fusion can be realized after filler passes based on the multi-pass route planning.


  • Welding Process
  • Welding Speed
  • Laser Welding
  • Welding Parameter
  • Welding Bead

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  • DOI: 10.1007/978-3-319-18997-0_47
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This article is conducted with the program “The key technologies of ultra-narrow gap laser welding of thick plates and intelligent equipment,” which is finally supported by the special development of key technologies and equipment of Shanghai, in China. The project number is ZB-ZBYZ-03-11-0485, and is also supported by National Undergraduate Innovative Test Program in China under the Grant No. 201410248030.

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Correspondence to Ke Zhang .

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Huang, TY., Fan, LW., Bao, YN., Shi, H., Zhang, K. (2015). Multi-pass Route Planning for Thick Steel Plate Using Laser Welding with Filler Wire. In: Tarn, TJ., Chen, SB., Chen, XQ. (eds) Robotic Welding, Intelligence and Automation. RWIA 2014. Advances in Intelligent Systems and Computing, vol 363. Springer, Cham.

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  • Print ISBN: 978-3-319-18996-3

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