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To provide a joining method and a joining structure by rolling friction that can be applied to joining of a large-scale steel material, using a relatively small mechanism, in particular, using a simple mechanism of only rotation that does not require a large pressing force, for joining a steel material constituting a steel structural frame such as a column and beam of a building steel structure.SOLUTION: A blank space 50 having a side peripheral surface 52 and a bottom part 51 is machined in a rotationally symmetrical shape across an end face 11 of a first steel material 10 and an end face 12 of a second steel material 20. In a state in which a pressing force is applied to a contact part 60 between a tip part 47 of a joining metal 40 and the bottom part 51 of the blank space 50, the joining metal 40 is rotated about a rotation axis 71 to generate friction. A material structure in the vicinity of a rolling friction surface 62 is melted utilizing friction heat due to the friction to produce a molten metal 80. A gap 61 between a side peripheral surface 42 of the joining metal 40 and the side peripheral surface 52 of the blank space 50 is filled with the liquefied molten metal 80, which is integrated with the structure in the vicinity of the gap 61 to join the first steel material 10 and the second steel material 20 via the joining metal 40.SELECTED DRAWING: Figure 2
【課題】建築鋼構造の柱や梁などの鋼構造骨組を構成する鋼材の接合のため、比較的小さな機構で、特に、大きな押し付け力を必要とせず回転のみの簡易な機構を用いて、大規模な鋼材の接合に適用できる回転摩擦による接合方法および接合構造を提供する。【解決手段】第１の鋼材１０の端面１１と第２の鋼材２０の端面１２とに跨り回転対称形状で側周面５２と底部５１を有する空所５０を加工し、接合金属４０の先端部４７と空所５０の底部５１との接触部６０に押圧力を加えた状態で接合金属４０を回転軸７１周りに回転させて摩擦を生ぜしめ、摩擦による摩擦熱を利用して回転摩擦面６２近傍の材料組織を溶融させて溶融金属８０を生成し、液体化した溶融金属８０を接合金属４０の側周面４２と空所５０の側周面５２との隙間６１に充填させ、隙間６１近傍の組織と一体化させることにより接合金属４０を介して第１の鋼材１０と第２の鋼材２０とを接合する。【選択図】図２
To provide a joining method and a joining structure by rolling friction that can be applied to joining of a large-scale steel material, using a relatively small mechanism, in particular, using a simple mechanism of only rotation that does not require a large pressing force, for joining a steel material constituting a steel structural frame such as a column and beam of a building steel structure.SOLUTION: A blank space 50 having a side peripheral surface 52 and a bottom part 51 is machined in a rotationally symmetrical shape across an end face 11 of a first steel material 10 and an end face 12 of a second steel material 20. In a state in which a pressing force is applied to a contact part 60 between a tip part 47 of a joining metal 40 and the bottom part 51 of the blank space 50, the joining metal 40 is rotated about a rotation axis 71 to generate friction. A material structure in the vicinity of a rolling friction surface 62 is melted utilizing friction heat due to the friction to produce a molten metal 80. A gap 61 between a side peripheral surface 42 of the joining metal 40 and the side peripheral surface 52 of the blank space 50 is filled with the liquefied molten metal 80, which is integrated with the structure in the vicinity of the gap 61 to join the first steel material 10 and the second steel material 20 via the joining metal 40.SELECTED DRAWING: Figure 2
【課題】建築鋼構造の柱や梁などの鋼構造骨組を構成する鋼材の接合のため、比較的小さな機構で、特に、大きな押し付け力を必要とせず回転のみの簡易な機構を用いて、大規模な鋼材の接合に適用できる回転摩擦による接合方法および接合構造を提供する。【解決手段】第１の鋼材１０の端面１１と第２の鋼材２０の端面１２とに跨り回転対称形状で側周面５２と底部５１を有する空所５０を加工し、接合金属４０の先端部４７と空所５０の底部５１との接触部６０に押圧力を加えた状態で接合金属４０を回転軸７１周りに回転させて摩擦を生ぜしめ、摩擦による摩擦熱を利用して回転摩擦面６２近傍の材料組織を溶融させて溶融金属８０を生成し、液体化した溶融金属８０を接合金属４０の側周面４２と空所５０の側周面５２との隙間６１に充填させ、隙間６１近傍の組織と一体化させることにより接合金属４０を介して第１の鋼材１０と第２の鋼材２０とを接合する。【選択図】図２
ROLLING FRICTION WELDING
回転摩擦溶接
KAMIYA KOJI (author)
2019-03-22
Patent
Electronic Resource
Japanese
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