The Paton Welding Journal, 2011, №04



2011 №04 (08)

2011 №04 (10)

---

The Paton Welding Journal, 2011, #4, 38-42 pages  

LASER WELDING OF THIN-SHEET STAINLESS STEEL

V.D. SHELYAGIN¹, A.G. LUKASHENKO¹, D.A. LUKASHENKO¹, A.V. BERNATSKY¹, V.P. GARASHCHUK² and V.I. LUTSENKO³

¹E.O. Paton Electric Welding Institute, NASU, Kiev, Ukraine
²National Technical University of Ukraine «Kiev Polytechnic Institute», Kiev, Ukraine
³SRIC ARMATOM Ltd., Kiev, Ukraine
 
 
Abstract
Peculiarities of laser welding of the 0.15 and 0.20 mm thick austenitic stainless steel sheets were studied. It was shown that at a certain power of the laser beam the experimentally measured width of the weld could be satisfactorily described by the model of a linearly moving source in a homogeneous approximation. Increase in power of the laser beam results in formation of a hole on the surface being welded, through which part of the beam power goes away, thus leading to violation of correlations with the model. Based on the peculiarities revealed, a procedure is proposed for determination of optimal welding parameters to provide the maximal effective efficiency of the process.
 
 
Keywords: laser welding, stainless steel, thin sheet, effective efficiency, quality criteria, weld width and shape, weld metal structure, strength
 
 
Received:                ??.??.??
Published:               28.04.11
 
 
References
1. (1974) Technology for fusion electric welding of metals and alloys. Ed. by B.E. Paton. Moscow: Mashinostroenie.
2. http://www.thefabricator.com/article/tubepipeproduction/laser-welding-of-stainless-pressure-tubes
3. http://www.medicaldevice-network.com/features/feature81029/
4. Daurelio, G., Memola Capece Minutolo, F., Curcio, F. et al. (2003) On the welding of austenitic/ferritic stainless steels by a high power diode laser. In: Proc. of 12th Int. Sci. Conf. on Achievements in Mechanical & Materials Engineering (7-10 Dec. 2003, Gliwice), 187-190.
5. Nobuyuki, A. (2005) Microwelding of thin stainless steel foil with a direct diode laser. Transact. of JWRI, 34(1), 19-23.
6. Stasovsky, Yu.N. (2008) Scientific bases of resource-saving technologies for manufacturing small-size precision pipes as applied to minicompanies using thin-wall welded billets. Suchasni Problemy Metallurgii, 11, 377-384.
7. (2009) YLR-100-AC: Ytterbium fiber laser. IPG Laser GmbH.
8. Rykalin, N.N. (1951) Calculations of thermal processes in welding. Moscow: Mashgiz.
9. Grigoriants, A.G., Shiganov, I.N., Misyurov, A.I. (2006) Technological processes of laser treatment: Manual for institutes of higher education. Moscow: N.E. Baumana MGTU.
10. Averin, V.G., Aronzon, B.A., Babaev, N.S. et al. (1976) Tables of physical values: Refer. Book. Ed. by I.K. Kikoin. Moscow: Atomizdat.
11. Vedenov, A.A., Gladush, G.G. (1985) Physical processes in laser treatment of materials. Moscow: Energoatomizdat.

---