CURVED MATERIAL OF COMPOSITE STEEL PLATE AND MANUFACTURING METHOD OF CURVED MATERIAL OF THE SAME

PROBLEM TO BE SOLVED: To provide a curved material of composite steel plate capable of preventing a weld part from being broken by shear stress, and a manufacturing method of the curved material of the composite steel plate.SOLUTION: A composite steel plate 1 of flat shape is made by performing plug...

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Bibliographische Detailangaben
Hauptverfasser:	NOMURA TAKESHI, MATSUBARA KAZUAKI, WATANABE HIROTSUYO, HONDA TAKASHI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING MACHINE TOOLS MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS PUNCHING METAL SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a curved material of composite steel plate capable of preventing a weld part from being broken by shear stress, and a manufacturing method of the curved material of the composite steel plate.SOLUTION: A composite steel plate 1 of flat shape is made by performing plug welding of a first steel plate 2 with flat shape and a second steel plate 3 with flat shape formed of a welding through-hole on a predetermined welding part 4 so as to bury welding material 5 into the welding through-hole. The composite steel plate 1 of flat shape is worked into a curved shape of a predetermined bend radius R to make curved material. A radius D of welding through-hole is set such that the shear stress actuated to the welding part 4 gets to lower than a shear strength of the welding material 5 by being made to be the curved shape.SELECTED DRAWING: Figure 2 【課題】せん断応力によって溶接部が破断してしまうことを防止できるようにした、複合鋼板の湾曲材及びその湾曲材の製造方法を提供する。【解決手段】平坦形状の第一鋼板２と、所定の溶接部４において溶接用貫通穴が設けられた平坦形状の第二鋼板３とを、前記溶接用貫通穴に溶接材５を埋め込むようにしてプラグ溶接することにより、平坦形状の複合鋼板１を作成する。この平坦形状の複合鋼板１を、所定の曲げ半径Ｒの湾曲形状に加工して湾曲材とする。溶接材５のせん断強度よりも、湾曲形状とされたことにより前記溶接部４に作用するせん断応力が低くなるように、前記溶接用貫通穴の径Ｄを設定する。【選択図】図２