| 2002 №09 (13) | 2002 №09 (02) |
The Paton Welding Journal, 2002, #9, 2-4 pages
Electron beam welding of 60 mm thick steels using longitudinal oscillations of beam
K.S. Akopiants, V.M. Nesterenkov, O.K. Nazarenko
E.O. Paton Electric Welding Institute of the NASU 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.Abstract
Frequency of natural oscillations of molten metal of the weld pool (tens<196>hundreds of hertz) has been estimated. The pulsed effect on the pool providing oscillation of the beam from a tail part of the pool to its leading part has been attained experimentally. Narrow through-penetration welds were made with a penetration depth up to 60 mm, width of about 1 mm and weld shape factor of 40.
Keywords: electron beam welding, pulsed effect, scanning with saw-shaped oscillations, narrow welds
References
1. Nazarenko, O.K., Kajdalov, A.A., Kovbasenko, S.N. (1987) Electron beam welding. Kyiv: Naukova Dumka.2. Ohmine, M., Hiramoto, S., Jamane, J. (1983) Fundamental study on the pulsed electron beam welding. IJW Doc. IV- 348-83.
3. Schulze, K.-R., Fritz, D., Reindl, G. (1996) Je dicker, je lieber - Elektronenstrahlschweissen im Vakuum. Praktiker, 6, 250-254.
4. (1976) Hydromechanics of weightlessness. Moscow: Nauka.
5. Akopiants, K.S., Yemchenko-Rybko, A.V. (1981) Control of penetration depth and electron beam focusing by frequency of ion current ripples during welding. Avtomatich. Svarka, 9, 28-32.