METHOD OF MANUFACTURING ELECTRIC RESISTANCE WELDED TUBE WITH EXCELLENT WELD CHARACTERISTIC

• Main Authors: MURAKAMI, MUNEYOSHI, IWAZAKI, KENICHI, OKABE, TAKATOSHI, YOKOYAMA, HIROYASU, KENMOCHI, KAZUHITO, SUGIMOTO, YUJI, INOUE, TOMOHIRO, SHIOTANI, OSAMU, MATSUO, NOBUYUKI
• Format: Patent
• Language: English; French; German
• Published: 29.08.2012
• Subjects: 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; WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL

A method of manufacturing an electric resistance welding pipe is provided, in which a lateral edge shape is made to be an appropriate shape immediately before electric resistance welding is performed, thereby penetrators are securely removed during the electric resistance welding, consequently an electric resistance welding pipe having excellent characterization of welded seam can be obtained. A fin shape in finpass forming is printed to lateral edges of a strip, thereby the lateral edges of the strip are shaped with predetermined tapering.