The Paton Welding Journal, 2013, №05



2013 №05 (06)

2013 №05 (08)

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The Paton Welding Journal, 2013, #5, 51-55 pages  

DEVELOPMENT OF LASER WELDING OF ALUMINIUM ALLOYS AT THE E.O. PATON ELECTRIC WELDING INSTITUTE (Review)

V.Yu. KHASKIN

E.O. Paton Electric Welding Institute, NASU, Kiev, Ukraine
 
 
Abstract
The works, connected with the development of precision technologies of welding of aluminium alloy structures, allowing minimizing the residual welding deformations, are urgent. They, for example, include the technologies, envisaging the application of a laser welding. The aim of the present article is the review of investigations on welding aluminium and its alloys, applying a laser emission, carried out at the E.O. Paton Electric Welding Institute since the end of the 1960s until now. The stage-by-stage development of these investigations is shown depending on the progress of the laser engineering and growth of level of knowledge of researchers. Three main stages of works on laser welding are distinguished: with application of low-power pulsed lasers (from the end of the 1960s until the end of the 1970s), with application of powerful continuous-wave lasers (from the beginning of the 1980s until the beginning of the 2000s) and with application of hybrid laser-arc and laser-plasma processes (from the beginning of 2000s until now). The offered review illustrates the sufficiently high level of investigations of aluminium alloy welding by applying a laser emission, carried out by the PWI in different years. It is shown that these investigations are continued also at the present time. Their challenges are outlined, including industrial applications of the described methods of welding for manufacture of thin-walled body structures of motor cars, high-speed railway cars, different-purpose ships, aircrafts, rockets and space engineering objects. 16 Ref., 1 Table, 4 Figures.
 
 
Keywords: aluminium alloys, laser emission, hybrid, consumable electrode arc, transferred arc plasma, welding speeds, residual deformations, mechanical properties
 
 
Received:                25.01.13
Published:               28.05.13
 
 
References
1. Rabkin, D.M. (1986) Metallurgy of fusion welding of aluminium and its alloys. Kiev: Naukova Dumka.
2. Velichko, O.A., Garashchuk, V.P., Moravsky, V.E. (1972) Laser welding of butt joints of dissimilar metal. Avtomatich. Svarka, 3, 71-73.
3. Velichko, O.A., Garashchuk, V.P., Moravsky, V.E. (1973) Relation between joint quality and laser welding parameters. Ibid., 3, 24-27.
4. Nazarenko, O.K., Velichko, O.A., Avramchenko, P.F. et al. (1979) Technological possibilities of welding unit LT1-5: Information letter. Kiev: PWI.
5. Avramchenko, P.F., Molchan, I.V. (1983) Continuous laser beam welding of AMg6 alloy. Avtomatich. Svarka, 3, 68-69.
6. Velichko, O.A., Avramchenko, P.F., Molchan, I.V. et al. (1987) CO2-laser welding of T-joints of aluminium-magnesium alloy AMg6. Ibid., 6, 34-37.
7. Garashchuk, V.P., Shelyagin, V.D., Nazarenko, O.K. et al. (1997) Technologicac 10 kW CO2-laser LT104. Ibid., 1, 36-39.
8. Bondarev, A.A., Boldin, A.A., Shelyagin, V.D. et al. (1998) Peculiarities of laser welding of high strength aluminium-lithium alloys. In: Abstr. of Int. Conf. on Welding and Related Technologies into 21st Century (Kiev, Nov. 1998). Kiev: PWI.
9. Bondarev, A.A., Bondarev, Andr.A. (2001) Laser welding of aluminium alloys (Review). The Paton Welding J., 12, 19-25.
10. Bondarev, A.A., Bondarev, Andr.A. (2001) Device for a focusing lens protection from sprays and heating in laser welding. Ibid., 12, 58-60.
11. Shelyagin, V.D., Khaskin, V.Yu., Nabok, T.N. et al. (2005) Hybrid laser-arc welding of carbon steels and aluminium alloys. Dopovidi NAN Ukrainy, 7, 97-102.
12. Shonin, V.A., Mashin, V.S., Khaskin, V.Yu. et al. (2006) Residual stresses in butt joints of thin sheets from alloy AMg6 after arc and laser-arc welding. The Paton Welding J., 9, 20-24.
13. Krivtsun, I.V., Shelyagin, V.D., Khaskin, V.Yu. et al. (2007) Hybrid laser-plasma welding of aluminium alloys. Ibid., 5, 36-40.
14. Khaskin, V.Yu. (2009) Application of laser-arc cladding for filling up narrow cavities in aluminium alloy items. Ibid., 2, 31-34.
15. Krivtsun, I.V., Shelyagin, V.D., Khaskin, V.Yu. et al. (2009) Hybrid laser-plasma and laser-arc welding of various aluminium alloys. In: Laser technologies in welding and materials processing. Kiev: PWI, 47-49.
16. Shelyagin, V.D., Khaskin, V.Yu., Mashin, V.S. et al. (2009) Features of laser-MIG welding of high-strength aluminium alloys. The Paton Welding J., 12, 21-27.

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