TUBE CUTTING APPARATUS AND METHOD

A process for producing tubes (1), in particular for use in heat exchangers, from at least one metallic strip on a rolling mill train, wherein the strip, on a rolling mill train, is provided with predetermined breaking points, deformed and brought together to form the tube and finally the tubes are...

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Bibliographische Detailangaben
Hauptverfasser:	SCHMID MANFRED, KAESINGER RAINER
Format:	Patent
Sprache:	eng
Schlagworte:	AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL BROACHING COMBINED OPERATIONS FILING GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOTOTHERWISE PROVIDED FOR MACHINE TOOLS MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METAL-WORKING NOT OTHERWISE PROVIDED FOR OTHER WORKING OF METAL PERFORMING OPERATIONS PLANING PUNCHING METAL ROLLING OF METAL SAWING SCRAPING SHEARING SLOTTING TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TRANSPORTING UNIVERSAL MACHINE TOOLS
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Beschreibung
Zusammenfassung:	A process for producing tubes (1), in particular for use in heat exchangers, from at least one metallic strip on a rolling mill train, wherein the strip, on a rolling mill train, is provided with predetermined breaking points, deformed and brought together to form the tube and finally the tubes are torn off at the predetermined breaking points between two pairs of rolls having a speed difference. The process is improved, in terms of the tearing off of individual tubes, in that an areal compressive force (Ak) is applied to the tube at least at the moment of tearing off and a sufficient tearing force (Rk) is produced and transmitted to the tube to be torn off.