| 2000 №04 (02) | 2000 №04 (04) |
The Paton Welding Journal, 2000, #4, 11-14 pages
Control of bead formation in arc surfacing with strip electrode
A.D. Razmyshlyaev
Priazov State Technical University, Mariupol, UkraineAbstract
Electromagnetic nature of a defect in the weld bead in the form of a cavity (saddle) formed in its central portion in DC submerged-arc surfacing using strip electrode is described. It is suggested that the controlling magnetic fields should be used to compensate for asymmetry of the magnetic field induced in the arc zone by the surfacing current flowing through the strip electrode extension.
Keywords: arc surfacing, strip electrode, deposited bead, metal formation, electromagnetic forces
References
1. Kravtsov, T.G. (1978) Electric arc surfacing with electrode strip. Moscow: Mashinostroyeniye.2. Razmyshlyaev, A.D. (1985) Study of liquid metal flows in arc welding. Svarochnoye Proizvodstvo, 10, 31 - 32.
3. Razmyshlyaev, A.D., Maevskii, V.R. (1995) Pattern of the magnetic field in the interelectrode gap in arc surfacing with strip electrode. Ibid., 2, 15 - 18.
4. Razmyshlyaev, A.D. (1983) Arc displacement in submerged-arc strip surfacing. Avtomaticheskaya Svarka, 6, 70 - 71.
5. Razmyshlyaev, A.D., Maevskii, V.R. A device for current supply to the electrode for magnetically-impelled arc welding and surfacing. USSR author’s certificate 1704973. Publ. 1992.