Abstract
Research to improve wire melting rate in flux cored arc welding was conducted. Relationships between contact tip to work-piece distance (hereafter, CTWD) and wire melting rate are discussed with reference to bead on plate welding experiments. As a result of the experiments, wire melting rate could be increased by increasing CTWD but it had some problems such as unstable wire movement and poor shielding. To overcome the problems and to increase the wire melting rate, it is suggested to change the materials of the contact tip. Finite elements analysis was performed to predict temperatures of a welding wire during welding processes and to analyse general situations. Results of finite elements analyses were compared with experimental results. Numerical results show good agreements with experimental results.
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References
Lee JS, Yun JO, Jeong SH, Park CG, An YH (2010) The study about characteristics of welding consumable and weld metal for EGW. J Weld Join 23:79–83
Han IW, Park YH, An GB, An YH (2009) Development trends of steel plates for ship building and off-shore construction and it’s weldability. J Weld Join 27:25–33
Li XR, Zhang YM, Kvidahl L (2013) Penetration depth monitoring and control in submerged arc welding. Weld Res 92:48–56
Suban M, Tusek J (2001) Dependence of melting rate in MIG/MAG welding on the type of shielding gas used. J Mater Process Technol 119:185–192
Halmoy E (1979) Wire melting rate, droplet temperature and effective anode melting potential. Proc. Arc physics and weld pool behavior; an international conference, London, UK, May 1979, Welding Institute, Paper 29
Wilson JL, Claussen GE, Jackson CE (1956) The effect of I2R heating on electrode on electrode melting rate. Weld Res Supp1–8
Lesnewich A (1958) Control of melting rate and metal transfer in gas-shield metal-arc welding; part 1—control of electrode melting rate. Weld Res Suppl 343–353
Robinson MH (1961) Observation on electrode melting rates during submerged-arc welding. Weld Res Suppl 503–515
Chandel RS (1987) Mathematical modeling of melting rates for submerged arc welding. Weld Res Suppl 135–140
Kyung KD, Lee JH, Chon HJ, Park BH, Kang BY, Kim HJ (1996) Effect of contact-tube to work distance on the melting rate of GMA welding. J Weld Join 14:87–94
Jeong HS (2001) Fundamental of fusion welding–shielding gases for arc welding. J Weld Join 19:1–4
Cho SM, Son MS, Park JH (2013) Development of welding quality monitoring method for TIG cladding. J Weld Join 31:90–95
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Han, J.H., Lee, J.S., Kim, SH. et al. A study on the improvement of a contact tip for the wire melting rate enhancement. Weld World 61, 1181–1187 (2017). https://doi.org/10.1007/s40194-017-0494-1
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DOI: https://doi.org/10.1007/s40194-017-0494-1