| 2012 №06 (03) | 2012 №06 (05) |
The Paton Welding Journal, 2012, #6, 17-18 pages
MECHANISM OF ELECTROMAGNETIC DEGASSING OF LIQUID METAL IN UNDERWATER WELDING
O.Yu. GOROBETS1, S.Yu. MAKSIMOV2 and E.A. PRILIPKO2
1NTUU «Kiev Polytechnic Institute», Kiev, Ukraine
2E.O. Paton Electric Welding Institute, NASU, Kiev, Ukraine
Abstract
A nonconvective mechanism of liquid melt degassing under the conditions of external electromagnetic impact in underwater welding is considered. It is established that the generated buoyancy electromagnetic force acting on gas bubbles and promoting their removal from the melt, is several times larger than the Archimedean force. By its magnitude and influence on weld pool degassing, it is comparable with the centrifugal force generated in the melt rotating under the impact of an external electromagnetic field.
Keywords: underwater welding, weld pool, external electromagnetic impact, nonconvective degassing mechanism
Received: 16.11.11
Published: 28.06.12
References
1. Ryzhov, R.M., Kuznetsov, V.D. (2010) Magnetic control of welded joint quality. Kyiv: Ekotekhnologiya.
2. Gorobets, O.Yu., Maksimov, S.Yu., Prilipko, E.A. (2008) Analysis of hydrodynamic processes in underwater welding with electromagnetic action. In: Proc. of 4th Int. Conf. on Mathematical Modeling and Information Technologies in Welding and Related Processes (27-30 May 2008, Katsiveli, Ukraine). Kiev: PWI, 9-12.
3. Ryzhov, R.N., Maksimov, S.Yu., Prilipko, E.A. (2006) Influence of external electromagnetic actions on weld porosity in underwater wet welding. Vestnik NTUU «KPI», 48, 226-229.
4. Ryzhov, R.N., Kozhukhar, V.A., Maksimov, S.Yu. et al. (2004) Application of external electromagnetic actions for improvement of mechanical properties of welds in underwater wet welding. The Paton Welding J., 11, 49-51.
5. Kolin, A. (1953) An electromagnetokinetic phenomenon involving migration of neutral particles. Science, 117, 134-137.
6. Leenov, D., Kolin, A. (1954) Theory of electromagnetophoresis. Magnetohydrodynamic forces experienced by spherical and symmetrically oriented cylindrical particles. Chemical Physics, 22, 683-688.
7. Andres, U.Ts. (1963) Measurements of the ejecting electromagnetic force in a conducting liquid. Izmerit. Tekhnika, 5, 29-31.
8. Warczok, A., Riverous, G. (2003) Effect of electric and magnetic fields on metallic inclusions in a liquid slag. In: Proc. of TMS Annual Meeting (March 2-6, 2003, San Diego), 224-229.
The cost of subscription/purchase order journals or individual articles
| Journal/Currency | Annual Set | 1 issue printed |
1 issue |
one article |
| AS/UAH | 1800 UAH | 300 UAH | 300 UAH | 150 UAH |
| AS/USD | 192 $ | 32 $ | 26 $ | 16 $ |
| AS/EUR | 180 € | 30 € | 25 € | 15 € |
| TPWJ/UAH | 7200 UAH | 600 UAH | 600 UAH | 280 UAH |
| TPWJ/USD | 384 $ | 32 $ | 26 $ | 16 $ |
| TPWJ/EUR | 360 € | 30 € | 25 € | 15 € |
| SEM/UAH | 1200 UAH | 300 UAH | 300 UAH | 150 UAH |
| SEM/USD | 128 $ | 32 $ | 26 $ | 16 $ |
| SEM/EUR | 120 € | 30 € | 25 € | 15 € |
| TDNK/UAH | 1200 UAH | 300 UAH | 300 UAH | 150 UAH |
| TDNK/USD | 128 $ | 32 $ | 26 $ | 16 $ |
| TDNK/EUR | 120 € | 30 € | 25 € | 15 € |
AS = «Automatic Welding» - 6 issues per year;
TPWJ = «PATON WELDING JOURNAL» - 12 issues per year;
SEM = «Electrometallurgy Today» - 4 issues per year;
TDNK = «Technical Diagnostics and Non-Destructive Testing» - 4 issues per year.