HT780鋼のレーザ・アークハイブリッド溶接に関する検討 Research on Laser-arc Hybrid Welding of HT780 Steel

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The use of thin steel components that can be joined by one-layer-one-pass laser welding or laser-arc hybrid welding has been increasing with the trend of reducing the plate thickness by using higher strength steels. This has enhanced the demand for laser-arc hybrid welding of HT780 steels in the bridge and industrial machinery applications. Taking this trend into account, the authors have researched the suitable welding parameters and consumables for the hybrid welding process that combines laser and MAG arc welding for joining HT780 steel sheets. As a result the following welding parameters have been proven to be most appropriate for better root gap resistance and lower spatter: MAG arc for leading (kept at the right angle)/laser for trailing (kept at the pushing angle); laser-arc distance of 3-5 mm; laser's focus distance of ± 0 mm; and shielding gas of Ar-20%CO<sub>2</sub>. As to the welding wire for laser-arc hybrid welding of HT780 steel, the HT590-class arc welding wire of Cr-Mo-Ti type with a low amount of sol. titanium has been revealed to be suitable to obtain sufficient weld joint tensile strength and toughness. Applied plate thickness range of the most relevant wire is from 6 mm to 12 mm.

収録刊行物

  • 溶接学会論文集 : quarterly journal of the Japan Welding Society

    溶接学会論文集 : quarterly journal of the Japan Welding Society 29(4), 248-257, 2011-12-31

    一般社団法人 溶接学会

参考文献:  25件中 1-25件 を表示

被引用文献:  1件中 1-1件 を表示

  • アーク溶接

    恵良 哲生

    溶接学会誌 = Journal of the Japan Welding Society 81(5), 380-383, 2012-07-05

    J-STAGE 参考文献36件

各種コード

  • NII論文ID(NAID)
    10030151009
  • NII書誌ID(NCID)
    AN1005067X
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    02884771
  • データ提供元
    CJP書誌  CJP引用  J-STAGE 
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