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Effect of heat input on dilution and heat affected zone in submerged arc welding process

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Abstract

Submerged arc welding (SAW) is a fusion joining process, known for its high deposition capabilities. This process is useful in joining thick section components used in various industries. Besides joining, SAW can also be used for surfacing applications. Heat Affected Zone (HAZ) produced within the base metal as a result of tremendous heat of arc is of big concern as it affects the performance of welded/surfaced structure in service due to metallurgical changes in the affected region. This work was carried out to investigate the effect of polarity and other SAW parameters on HAZ size and dilution and to establish their correlations. Influence of heat input on dilution and heat affected zone was then carried out. Four levels of heat input were used to study their effect on % dilution and HAZ area at both the electrode positive and electrode negative polarities. Proper management of heat input in welding is important, because power sources can be used more efficiently if one knows how the same heat input can be applied to get the better results. Empirical models have been developed using statistical technique.

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Authors and Affiliations

  1. Department of Mechanical Engineering, YMCA University of Science and Technology, Sector 06, Faridabad, 121 006, India

    HARI OM

  2. Department of Mechanical Engineering, Indian Institute of Technology Delhi, New Delhi, 110 016, India

    SUNIL PANDEY

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  1. HARI OM
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  2. SUNIL PANDEY
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Correspondence to HARI OM.

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OM, H., PANDEY, S. Effect of heat input on dilution and heat affected zone in submerged arc welding process. Sadhana 38, 1369–1391 (2013). https://doi.org/10.1007/s12046-013-0182-9

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  • DOI: https://doi.org/10.1007/s12046-013-0182-9

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