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1. WO2020090939 - SQUARE STEEL PIPE AND METHOD OF WELDING SQUARE STEEL PIPE

Publication Number WO/2020/090939
Publication Date 07.05.2020
International Application No. PCT/JP2019/042691
International Filing Date 30.10.2019
IPC
B23K 9/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
9Arc welding or cutting
B23K 9/173 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
9Arc welding or cutting
16making use of shielding gas
173and of consumable electrode
B23K 9/18 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
9Arc welding or cutting
18Submerged-arc welding
B23K 9/23 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
9Arc welding or cutting
23taking account of the properties of the materials to be welded
B23K 37/06 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
37Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the other main groups of this subclass
06for positioning the molten material, e.g. confining it to a desired area
E04B 1/24 2006.01
EFIXED CONSTRUCTIONS
04BUILDING
BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
1Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
24the supporting parts consisting of metal
Applicants
  • 旭化成建材株式会社 ASAHI KASEI CONSTRUCTION MATERIALS CORPORATION [JP]/[JP]
Inventors
  • 萩野 毅 HAGINO, Tsuyoshi
  • 前嶋 匡 MAEJIMA, Tadashi
  • 佐藤 誠 SATO, Makoto
Agents
  • 稲葉 良幸 INABA, Yoshiyuki
  • 大貫 敏史 ONUKI, Toshifumi
  • 内藤 和彦 NAITO, Kazuhiko
Priority Data
2018-20578931.10.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) SQUARE STEEL PIPE AND METHOD OF WELDING SQUARE STEEL PIPE
(FR) TUYAU EN ACIER CARRÉ ET PROCÉDÉ DE SOUDAGE DE TUYAU EN ACIER CARRÉ
(JA) 角形鋼管及び角形鋼管の溶接方法
Abstract
(EN)
Provided is a square steel pipe having a rectangular cross section and comprising: a plurality of steel sheets thicker than a plate thickness of a steel pipe constituting a rectangular steel pipe column; and a welded metal (32) bonded by welding side edges of the steel sheets. The welded metal (32) is formed at a corner of the square steel pipe, and comprises a multilayer structure in which different types of material are stacked. The yield point of a material forming an inner material layer (321) located on the inside of multiple layers is higher than the yield point of a material forming an outer material layer (322) located on the outside of the multiple layers.
(FR)
La présente invention concerne un tuyau en acier carré présentant une section transversale rectangulaire et comprenant : une pluralité de feuilles d'acier plus épaisses qu'une épaisseur de plaque d'un tuyau en acier constituant une colonne de tuyau en acier rectangulaire ; et un métal soudé (32) lié par le soudage de bords latéraux des feuilles d'acier. Le métal soudé (32) est formé au niveau d'un coin du tuyau en acier carré et comprend une structure multicouche dans laquelle différents types de matériau sont empilés. Le point d'élasticité d'un matériau formant une couche de matériau interne (321) situé sur l'intérieur de multiples couches est supérieur au point d'élasticité d'un matériau formant une couche de matériau externe (322) située sur l'extérieur des multiples couches.
(JA)
角形鋼管は、四角形鋼管柱を構成する鋼管の板厚よりも厚い複数枚の鋼板と、鋼板の側縁部同士を溶接して接合された溶接金属(32)とから成る断面視四角形の鋼管であり、溶接金属(32)は、角形鋼管の角部に形成されると共に、異なる種類の材料が積層された多層構造から成り、多層のうち内側に位置する内側材料層(321)を形成する材料の降伏点は、多層のうち外側に位置する外側材料層(322)を形成する材料の降伏点よりも高い。
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