METHOD FOR THE IN-LINE MANUFACTURING OF STEEL TUBE

The invention relates to a method for manufacturing of steel tube from a long steel strip, comprising providing a length of steel strip material to the process, forming a tube of the steel strip material, welding the formed tube in longitudinal direction, giving the tube a heat treatment wherein the...

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Hauptverfasser:	FLIPSEN, Robertus, CELOTTO, Steven, PAULUSSEN, Gerardus, Jacobus, KAMP, Arjen
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL CHEMISTRY GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS PUNCHING METAL TRANSPORTING
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creator	FLIPSEN, Robertus CELOTTO, Steven PAULUSSEN, Gerardus, Jacobus KAMP, Arjen
description	The invention relates to a method for manufacturing of steel tube from a long steel strip, comprising providing a length of steel strip material to the process, forming a tube of the steel strip material, welding the formed tube in longitudinal direction, giving the tube a heat treatment wherein the mentioned steps are performed in one continuous in-line manufacturing line and the heat treatment comprises a heating regime such that in successive cross-sections of the tube a microstructure is achieved which holds at least 50 vol% austenite and a cooling trajectory to re-introduce ferrite, and/or bainite in desired volume fractions. La présente invention concerne un procédé de fabrication d'un tube en acier à partir d'une longue bande d'acier, comprenant la fourniture d'une longueur de matériau de bande d'acier au processus, la formation d'un tube du matériau de bande d'acier, le soudage du tube formé dans la direction longitudinale, l'application au tube d'un traitement thermique, les étapes mentionnées étant conduites dans une ligne de fabrication en ligne continue et le traitement thermique comprenant un régime de chauffage tel que, dans des sections transversales successives du tube, une microstructure est obtenue, laquelle contient au moins 50 % en volume d'austénite et une trajectoire de refroidissement pour réintroduire de la ferrite et/ou de la bainite dans des fractions volumiques souhaitées.
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language	eng ; fre
recordid	cdi_epo_espacenet_WO2018011377A1
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subjects	AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL CHEMISTRY GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS PUNCHING METAL TRANSPORTING
title	METHOD FOR THE IN-LINE MANUFACTURING OF STEEL TUBE
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