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1. WO2018047722 - ELECTRIC-RESISTANCE-WELDED CLAD STEEL PIPE AND METHOD FOR MANUFACTURING SAME

Publication Number WO/2018/047722
Publication Date 15.03.2018
International Application No. PCT/JP2017/031489
International Filing Date 31.08.2017
IPC
B21C 37/08 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
37Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
06of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
08Making tubes with welded or soldered seams
B23K 13/00 2006.1
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
13Welding by high-frequency current heating
B23K 13/06 2006.1
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
13Welding by high-frequency current heating
06characterised by the shielding of the welding zone against influence of the surrounding atmosphere
C21D 9/08 2006.1
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS
9Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
08for tubular bodies or pipes
C21D 9/50 2006.1
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS
9Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
50for welded joints
C22C 38/00 2006.1
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
CPC
B21C 37/08
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
37Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
06of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
08Making tubes with welded or soldered seams
B23K 11/0006
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
11Resistance welding; Severing by resistance heating
0006the welding zone being shielded against the influence of the surrounding atmosphere
B23K 11/02
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
11Resistance welding; Severing by resistance heating
02Pressure butt welding
B23K 11/0935
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
11Resistance welding; Severing by resistance heating
08Seam welding not restricted to one of the preceding subgroups
093for curved planar seams
0935of tube sections
B23K 13/00
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
13Welding by high-frequency current heating
B23K 13/06
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
13Welding by high-frequency current heating
06characterised by the shielding of the welding zone against influence of the surrounding atmosphere
Applicants
  • JFEスチール株式会社 JFE STEEL CORPORATION [JP]/[JP]
Inventors
  • 井手 信介 IDE Shinsuke
  • 松本 晃英 MATSUMOTO Akihide
  • 松本 昌士 MATSUMOTO Atsushi
  • 岡部 能知 OKABE Takatoshi
Agents
  • 杉村 憲司 SUGIMURA Kenji
Priority Data
2016-17791612.09.2016JP
2016-17795012.09.2016JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) ELECTRIC-RESISTANCE-WELDED CLAD STEEL PIPE AND METHOD FOR MANUFACTURING SAME
(FR) TUYAU EN ACIER PLAQUÉ SOUDÉ PAR RÉSISTANCE ÉLECTRIQUE ET SON PROCÉDÉ DE FABRICATION
(JA) 電縫溶接クラッド鋼管およびその製造方法
Abstract
(EN) Provided is an electric-resistance-welded clad steel pipe whereby a region in which a solidification structure having a particularly large effect on characteristics is formed in a weld is reduced, and function as a clad pipe is also not compromised. An electric-resistance-welded clad steel pipe having a first layer comprising carbon steel or low-alloy steel as a base metal and a cladding metal second layer comprising stainless steel or a nickel-containing alloy, the second layer being layered on one surface of the first layer, wherein the base metal is not exposed on a cladding-metal-side surface of the electric-resistance-welded clad steel pipe in a weld, and a solidification structure is not contained in each of circular cross-sections having a radius of 0.1 mm in a plane perpendicular to the pipe longitudinal direction, the circular cross-sections being centered at positions (i) through (iii). (i): A position in the weld at a depth of 1 mm from the outer surface of the electric-resistance-welded clad steel pipe and 0.3 mm in the width direction of a weld metal from the center of the width of the weld metal in a circumferential direction of the pipe. (ii): A position in the weld at the center in a thickness direction of the electric-resistance-welded clad steel pipe and 0.3 mm in the width direction of the weld metal from the center of the width of the weld metal in the circumferential direction of the pipe. (iii): A position in the weld at a depth of 1 mm from the inner surface of the electric-resistance-welded clad steel pipe and 0.3 mm in the width direction of the weld metal from the center of the width of the weld metal in the circumferential direction of the pipe.
(FR) Tuyau en acier plaqué soudé par résistance électrique dans lequel une région dans laquelle une structure de solidification ayant un effet particulièrement important sur des caractéristiques est formée dans une soudure est réduite, et la fonction en tant que tuyau plaqué n'est pas compromise. Un tuyau en acier plaqué soudé par résistance électrique comprend une première couche comprenant de l'acier au carbone ou de l'acier faiblement allié comme métal de base et une seconde couche de métal de placage comprenant de l'acier inoxydable ou un alliage contenant du nickel, la seconde couche étant stratifiée sur une surface de la première couche, le métal de base n'étant pas exposé sur une surface côté métal de placage du tuyau en acier plaqué soudé par résistance électrique dans une soudure, et une structure de solidification n'étant pas contenue dans chacune des sections transversales circulaires ayant un rayon de 0,1 mm dans un plan perpendiculaire à la direction longitudinale de tuyau, les sections transversales circulaires étant centrées dans des positions (i) à (iii). (I) : une position dans la soudure à une profondeur de 1 mm à partir de la surface extérieure du tuyau en acier plaqué soudé par résistance électrique et 0,3 mm dans le sens de la largeur d'un métal de soudure à partir du centre de la largeur du métal de soudure dans une direction circonférentielle du tuyau. (II) : une position dans la soudure au centre dans une direction d'épaisseur du tuyau en acier plaqué soudé par résistance électrique et 0,3 mm dans le sens de la largeur du métal de soudure à partir du centre de la largeur du métal de soudure dans la direction circonférentielle du tuyau. (III) : une position dans la soudure à une profondeur de 1 mm à partir de la surface intérieure du tuyau en acier plaqué soudé par résistance électrique et 0,3 mm dans le sens de la largeur du métal de soudure à partir du centre de la largeur du métal de soudure dans la direction circonférentielle du tuyau.
(JA) 溶接部の中でも特に特性への影響が大きい凝固組織が形成されている領域が低減され、かつ、クラッド管としての機能も損なわれていない電縫溶接クラッド鋼管を提供する。 母材である炭素鋼または低合金鋼からなる第1層と、前記第1層の一方の面に積層され、合せ材であるステンレス鋼またはニッケル含有合金からなる第2層とを有する電縫溶接クラッド鋼管であって、溶接部において前記母材が前記電縫溶接クラッド鋼管の合せ材側表面に露出しておらず、 次の(i)~(iii)の位置を中心とした、管長手方向に垂直な面における半径0.1mmの円形断面のそれぞれに凝固組織を含有しない、電縫溶接クラッド鋼管。 (i)前記溶接部における前記電縫溶接クラッド鋼管の外表面から深さ1mmの位置で、溶接金属の管周方向における幅の中央から該溶接金属の幅方向に0.3mmの位置 (ii)前記溶接部における前記電縫溶接クラッド鋼管の厚み方向における中央の位置で、溶接金属の管周方向における幅の中央から該溶接金属の幅方向に0.3mmの位置 (iii)前記溶接部における前記電縫溶接クラッド鋼管の内表面から深さ1mmの位置で、溶接金属の管周方向における幅の中央から該溶接金属の幅方向に0.3mmの位置
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