APPARATUS FOR MANUFACTURING ELECTRORESISTANCE-WELDED TUBE

• Main Authors: KOUCHI TETSUYA, OMORI KAZUMI
• Format: Patent
• Language: English
• Published: 08.01.2002
• Edition: 7
• Subjects: AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL; BLASTING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MACHINE TOOLS; MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; PIPES; PUNCHING METAL; SOLDERING OR UNSOLDERING; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS; WELDING; WORKING BY LASER BEAM

PROBLEM TO BE SOLVED: To enhance welding reliability in the manufacture of an electro resistance-welded tube with a small diameter and a thin wall thickness using a thermally high conductive material. SOLUTION: An apparatus for manufacturing the electro resistance-welded tube comprises a traveling mechanism 1 to continuously run the plate bar stock a forming roll 10 to round the running plate bar stock T in a C-shape in cross section, an induction heating coil 14 to heat both end edges E of the plate bar stock formed in the C-shape in cross section, a pair of No.1 step squeeze roll 16 to abut both side edges E by pressing the plate bar stock T heated from both sides, and a pair of No.2 step squeeze rolls 18 to further press both edges abutted and placed in the down-stream side of No.1 step squeeze rolls.