Technique for continuously welding and rolling special tube with single multi-roller frame

The invented technique is used for one-pass production of shaped pipe from circular one. Single multi-roller machine frame is substituted for conventionally used multiple dual-roller sizing stands. Its rollers are passively rotated, and the circular pipe whose diameter has been sized on the diameter...

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Bibliographische Detailangaben
1. Verfasser:	LI LIANSHI
Format:	Patent
Sprache:	eng
Schlagworte:	AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PUNCHING METAL TRANSPORTING
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Beschreibung
Zusammenfassung:	The invented technique is used for one-pass production of shaped pipe from circular one. Single multi-roller machine frame is substituted for conventionally used multiple dual-roller sizing stands. Its rollers are passively rotated, and the circular pipe whose diameter has been sized on the diameter-setter of welder set is driven into a pass formed by multiple rollers to make the circular pipe into a shaped one under the conducted deformation. It features high product quality, high productivity and easy operation.