Abstract
Electrogas arc welding with high efficiency (Two-electrode Vibratory Electrogas Arc Welding, 2E-VEGA® process) and flux-cored wires for the 2E-VEGA process have been developed. They can be applied to YP460 MPa class extremely thick steel plates for very large container ships. The travel speed of the developed 2E-VEGA process is about twice as high as that of the ordinary 1E-VEGA process. Weld metal obtained with the present process and the present wires satisfied the target requirements of YP (yield point or proof stress) ≥ 460 MPa, TS (tensile strength) ≥ 570 MPa, vE−20 (−20 °C Charpy absorbed energy) ≥ 53 J and Hv (hardness number) ≤ 210 Hv in Vickers scale, even when 30 kJ/mm arc energy welding for 51 mm-thick plates was conducted. Using the present process and the present wires, sufficient fracture toughness of joints welded with high arc energy can be obtained.
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References
Shirakihara H.: The 191st–192nd Nishiyama Memorial Technical Seminar (in Japanese), ISIJ, 2007, Tokyo.
Hirota K., Nakagawa T., Takeda S., Hashi Y., Tada M.: World’s first development and application of HTSS (high tensile strength steel) with yield stress of 47 kgf/mm2 to actual ship hull structure, Mitsubishi Heavy Industries Technical Review, 2007, Vol. 44, No. 3, pp. 28–33.
Sasaki K., Hongo A., Suda K., Motomatsu R., Hashiba Y., Ohkita S., Imai S., Toyohara T., Tsujii H., Ohta M.: Development of Two-electrode Electrogas Arc Welding Process, IIWDoc. XII-1761–03, 2003.
Emi H.: Illustrations of Hull Structure, Seizando Syoten, Tokyo, 2006.
Inoue T., Ishikawa T., Imai S., Koseki T., Hirota K., Tada M., Kitada H., Yamaguchi Y., Yajima H.: Long crack arre-stability of heavy-thick shipbuilding steels, Proceedings of the 16th International Offshore and Polar Engineering Conference (ISOPE-2006), 2006.
Inoue T., Ishikawa T., Imai S., Koseki T., Hirota K., Tada M., Yamaguchi Y., Matsumoto T., Yajima H.: Long crack arrest concept in heavy-thick shipbuilding steels, Proceedings of the 17th International Offshore and Polar Engineering Conference (ISOPE-2007), 2007.
Ishikawa T., Inoue T., Shimanuki H., Imai S., Otani J., Hirota K., Tada M., Yamaguchi Y., Matsumoto T., Yajima H.: Fracture toughness in welded joints of high strength shipbuilding steel plates with heavy-thickness, Proceedings of the 17th International Offshore and Polar Engineering Conference (ISOPE-2007), 2007.
Kitada H., Ikegami K., Takahashi N., Yajima H., Tada M., Machida S.: Application of YP40 TMCP plates to Hull Structural Members: Material selections and notch toughness in welded joints, Journal of the Society of Naval Architects of Japan, 1987, Vol. 162, pp. 408–414.
Ohkita S.: Study on the improvement for toughness on the welds of steel structure, Doctoral thesis, Osaka University, 1997 (in Japanese).
Horii Y.: Study on the influence of alloy elements on tensile strength and toughness of weld metal for high heat-input saw and optimization for content of alloy element, Doctoral thesis Osaka University, 1995 (in Japanese).
Kojima A., Kasuya T., Tsuruta T., Minami K.: Study on application of electrogas arc welding to SM570 steel in bridge fabrication, Doboku Gakkai Ronbunshuu A, 2007, Vol. 63, No. 1, pp. 1–13 (in Japanese).
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Hashiba, Y., Sasaki, K., Kasuya, T. et al. Development of Welding Materials for High Heat Input Welding Compatible with Thick Steel Plates of 460 MPa Yield Point Class for Very Large Container Ships. Weld World 54, R35–R41 (2010). https://doi.org/10.1007/BF03263482
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DOI: https://doi.org/10.1007/BF03263482