The Paton Welding Journal, 2001, №12

2001 №12 (05)

2001 №12 (07)

---

The Paton Welding Journal, 2001, #12, 29-32 pages

Peculiarities of penetration of metal in laser-arc welding using YAG laser

I.V. Krivtsun

E.O. Paton Electric Welding Institute of the NASU 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.

Abstract
Simplified model of thermal processes occurring in metal in combined laser-arc welding performed in the thermal conductivity penetration mode is suggested. The model allows for the effect of contraction of the anode region of the arc as resulting from laser evaporation of metals. Experimental and numerical investigations into peculiarities of penetration of stainless steel samples in combined welding using the YAG laser and the argon arc with a non-consumable electrode were conducted. Results of the calculations are in a sufficiently good agreement with the experimental data.
Keywords: laser-arc welding, electric arc, laser beam, metal penetration, temperature field, investigations

References

1. Tusek, J. (1996) Synergic operation of welding arc and laser beam − for practical application or for scientific research only? Varilna Tehnika, 2, 39-46.
2. Dilthey, U., Wieschemann, A. (2000) Prospects by combining and coupling laser beam and arc welding processes. Riv. Ital. Said., 6, 749-759.
3. Steen, W.M. (1980) Arc augmented laser processing of materials. J. Appl. Phys., 11, 5636-5641.
4. Diebold, T.P., Albright, C.E. (1984) «Laser-GTA» welding of aluminium alloy 5052. Welding J., 6, 18-24.
5. Matsuda, J., Utsumi, A. et al. (1988) TIG or MIG arc augmented laser welding of thick mild steel plate. Joining and Materials, 1, 31-34.
6. Gvozdetsky, V.S., Krivtsun, I.V., Chizhenko, M.I. et al. (1995) Laser-arc discharge: theory and applications. Weld ing and Surfacing Rev., Vol. 3, Part 3. Harwood A.P.
7. Bagdasarov, Kh.S., Diachenko, V.V., Fedorov, E.A. et al. (1990) Technological YAG laser of 400 W power. Avto¬maticheskaya Svarka, 2, 73-75.
8. Rykalin, N.N. (1951) Calculations of thermal processes in welding. Moscow: Mashgiz.
9. (1968) Materials in machine building. Manual. Ed. by I.V. Kudryavstev Moscow. Mashinostroyeniye.
10. Diuly, U. (1986) Laser technology and analysis of materials. Moscow: Mir.
11. Shoek, P.A. (1966) Study of energy balance at the anode of high current arcs burning in argon atmosphere. In: Modern problems of heat exchange. Moscow-Leningrad: Energia.
12. Finkelnburg, V., Mekker, G. (1961) Electric arc and thermal plasma. Moscow: Inostr. Litetarura.
13. Dyuzhev, G.A., Nemchinsky, V.O., Shkolnik, S.M. et al. (1983) Anode processes in high current arc discharge. Khimiya Plazmy, 10, 169-209.
14. Kimblin, S.U. (1977) Erosion of electrodes and ionization processes in near-electrode zones of vacuum arcs and arcs under atmospheric pressure. In: Experimental investigations of plasmatrons. Ed. by M.F. Zhukov. Novosibirsk: Nauka.

---

Suggested Citation

I.V. Krivtsun (2001) Peculiarities of penetration of metal in laser-arc welding using YAG laser. The Paton Welding J., 12, 29-32.

---