STRAIGHTENING METHOD FOR BEND OF ELECTRIC WELDED PIPE

PURPOSE:To obtain stably a straight steel pipe by equipping specific numbers of turks heads at an outlet side of a sizing mill on a production line of an electric welded steel pipe and by dividing into a sizing function and a repeated bending function. CONSTITUTION:On the production line of the elec...

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Hauptverfasser:	ADAKA MATSUO, NAGAO TAKENAO, WATANABE YUTAKA, MATOBA SATORU
Format:	Patent
Sprache:	eng
Schlagworte:	MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PUNCHING METAL TRANSPORTING WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:	PURPOSE:To obtain stably a straight steel pipe by equipping specific numbers of turks heads at an outlet side of a sizing mill on a production line of an electric welded steel pipe and by dividing into a sizing function and a repeated bending function. CONSTITUTION:On the production line of the electric welded steel pipe, turks heads are equipped on three stages or preferably five stages (II-VI) at the outlet side of the sizing mill I. Then, separating the sizing function and the repeated bending function, the warp straightening is performed by bending repeatedly using the turks heads II-VI. In this way, any bend is straightened to obtain the straight steel pipe.