Abstract
Hybrid welding has been introduced as a process that combines one laser and one arc welding process to work together. These advanced joining processes are effective and outweigh several drawbacks of mere single methods. Hot spots, made by laser to the joint, have been reported to stabilise the arc and change the way of material transfer in the arc. The arc is also attracted and constricted by the hot spot. This phenomenon has been utilised in this study in order to get the process adaptable inside very narrow grooves. This novel approach, combined with multipass techniques, enables a considerable increase in the thickness of the parts to be welded. Welding continues to employ rather low total heat input levels and, consequently, results in very low thermal distortions in joining thick sections. As the process retains a keyhole typical of high energy density welding, the process is also very effective for joining thick sections. Based on the above argument, the process further developed in this study should be considered when evaluating welding processes for joining vacuum vessel sectors of ITER. The same certainly applies to many other demanding thick sections and hence heavy high precision components.
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References
Abe N. et al.: Dynamic observation of high speed laser-arc combination welding of thick steel plates, 1997, Trans. JWRI, vol. 26, No. 2, pp. 7–11.
Abe N., Hayashi M.: Trends in laser arc combination welding methods, Welding International, 2002, 16(2), pp. 94–98.
Dilthey U., Wieschemann A.: Prospects by combining and coupling laser beam and arc welding processes, Doc. IIW-1472-99 (ex. Doc. XI-1565–99), Welding in the World, 2000, vol. 44, No. 3, pp. 37–46.
Graf T., Staufer H.: LaserHybrid process at Volkswagen, IIW Doc. XII-1730–02, 2002, 9 p.
Hyatt C.V., et al.: Laser-assisted gas metal arc welding of 25-mm-thick HY-80 plate, Welding Journal, July 2001, vol.80, No. 7, pp. 163–172.
Ishide T., et al.: The latest YAG laser welding system — Development of hybrid YAG laser welding technology, Proc. of conference ICALEO ‘97, Laser Institute of America, 1997, pp.149–156.
Ishide T., et al.: Development of YAG laser and arc hybrid welding method — Development of various TIG-YAG and MIG-YAG welding methods, IIW Doc. XII-1705–02, 2002, 13 p.
Jernström P., et al.: Uusia tutkimustuloksia hybridihit-sauksesta ja sen tuotesovelluksista, Hitsaustekniikka 5/2002, The Welding Society of Finland, 2002, pp. 34–41.
Jokinen T., et al.: Welding of ship structural steel A36 using Nd:YAG -laser and gas-metal-arc welding, Journal of Laser Applications, October 2000, vol. 12, nr. 5, Laser Institute of America, pp. 185–188.
Jokinen T., et al.: Optimisation of parameters in hybrid welding of aluminium alloy, International Congress on Laser Advanced Materials Processing, LAMP’02, May 27–31 2002, Osaka, Japan, 6 p.
Makino Y., et al.: Combination welding between CO2 laser beam and MIG arc, Welding International, 2002, 16(2), pp. 99–103.
Ono M., et al.: Development of laser-arc hybrid welding, NKK Technical Review, 2002, No. 86, pp. 8–12.
Roland F., et al.: Laser welding in shipbuilding — an overview of the activities at Meyer Werft, IIW International Conference on Advanced Processes and Technologies in Welding and allied Processes, 24–25 June 2002, Copenhagen, Denmark, 13 p.
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Jokinen, T. Henry Granjon Prize Competition 2005 Winner, Category A “Joining and fabrication technology” Novel Ways of Using Nd:YAG Laser for Welding Thick Section Austenitic Stainless Steel. Weld World 49, 11–18 (2005). https://doi.org/10.1007/BF03266486
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DOI: https://doi.org/10.1007/BF03266486