HIGHLY EFFICIENT METHOD OF MANUFACTURING ELECTRIC RESISTANCE WELDED TUBE EXCELLENT IN WELD ZONE CHARACTERISTIC

Title:

HIGHLY EFFICIENT METHOD OF MANUFACTURING ELECTRIC RESISTANCE WELDED TUBE EXCELLENT IN WELD ZONE CHARACTERISTIC

Document Type and Number:

Japanese Patent JP2007296539

Kind Code:

A

Abstract:

To provide a highly efficient method of manufacturing an electric resistance welded tube excellent in weld zone characteristics by which the good quality of welding can be held and also decrease in manufacturing efficiency is prevented by appropriately imparting tapered shapes to end parts of a sheet (band material) before electric resistance welding when manufacturing the electric resistance welded tube.

The tapered shape is imparted to the end parts on the side of the upper surface of the band material 20 by rolling with a grooved roll 3 and also the tapered shape is imparted to the end parts on the side of the back surface of the band material 20 in the final stand of fin pass forming.

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Inventors:

KENMOCHI KAZUHITO
YOKOYAMA HIROYASU
OKABE YOSHITOMO
EGI MOTOAKI
NISHIDA YASUO

Application Number:

JP2006124553A

Publication Date:

November 15, 2007

Filing Date:

April 28, 2006

Export Citation:

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