Features of Arc Surfacing Process in a Longitudinal Magnetic Field

Abstract:

The electrode wire melting coefficient (α_m) is determined for the submerged arc surfacing and welding in a longitudinal magnetic field (LMF) under reverse and direct polarities with ferromagnetic and paramagnetic (non-magnetic) wires. The maximum gain in the wire melting coefficient is achieved in the magnetostatic field assisted surfacing and welding. The effect reduces with the LMF frequency increasing to 4-6 Hz and virtually does not change with the further increase to 50 Hz. The electrode wire melting coefficient is shown to increase depending on magnetic properties.It has been established that the penetration depth of the parent metal reduces at the 50 Hz LMF surfacing when the longitudinal induction exceeds 65 mT.The constant and alternating LMFs reduce the speed of in-bath liquid metal flows, which results in the reduced parent metal penetration efficiency at surfacing.

• Periodical: Applied Mechanics and Materials (Volume 682)
• Pages: 313-318
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.682.313
• Online since: October 2014
• Authors: Alexander D. Razmyshlyaev, Marina V. Ahieieva
• Keywords: Arc Surfacing, Arc Welding, Bead Geometric Parameters, Electrode Wire Melting Coefficient, Field Frequency, Longitudinal Magnetic Field, Magnetic Field Induction

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