METHOD FOR ELECTRIC RESISTANCE SEAM WELDING OF THE SIDE OVERLAPPED PORTION OF A TUBULAR FORM

A method of forming thin steel plate of predetermined dimensions into a tubular form such as a cylindrical or square tubular form in which the side seam or the overlapped portion of the form is subjected to electric resistance seam welding by passing it between upper and lower electrodes, and applyi...

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Bibliographic Details
Main Authors KAKIMOTO, MICHIYUKI, NOZAWA, TETUO, NAGATA, JUN
Format Patent
LanguageEnglish
French
Published 11.09.1984
Edition3
Subjects
CLADDING OR PLATING BY SOLDERING OR WELDING
CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
PERFORMING OPERATIONS
SOLDERING OR UNSOLDERING
TRANSPORTING
WELDING
WORKING BY LASER BEAM
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Summary:A method of forming thin steel plate of predetermined dimensions into a tubular form such as a cylindrical or square tubular form in which the side seam or the overlapped portion of the form is subjected to electric resistance seam welding by passing it between upper and lower electrodes, and applying a higher welding current to both edge parts of the overlapped portion than to the center of the overlapped portion thereby adjusting a welding current to such a value which does not substantially cause the formation of burrs but provides the center with a desired weld strength.
Bibliography:Application Number: CA19810385188