Calculation of Modes of Arc Welding under the Flux of Double-Sided Butt Joints

Abstract:

This paper gives the analysis of energy costs for arc automatic welding under the flux of double-sided butt joint without edge preparation according to the thickness of welding sheets. The coefficients for a linear dependence of specific energy from plate thickness are obtained. From this, a calculation method of effective power, current and arc voltage is proposed according to the joint formation speed. To calculate a fusion area of a weld section, a model of a surficial normal-circular heat source with an average heat flow in a heating spot 14−16 kW/cm² is used. Acceptable convergence of target and experimental cross-section areas of a weld is achieved for an arc reverse polarity. Calculation method let take into account the influence of arc polarity on a fusion area of a base metal. Main efficiency factors of a double-sided welding are defined. Possible reasons of augmentation of fusion effectiveness of a base metal in comparison with the electrode metal are noted.

• Periodical: Materials Science Forum (Volume 946)
• Pages: 889-894
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.946.889
• Online since: February 2019
• Authors: Vladimir P. Sidorov*
• Keywords: Arc Polarity, Double-Sided Weld, Joint Efficiency, Mode, Penetration Area, Welding Energy, Welding under Flux

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