Method of manufacturing high strength steel tubing from a steel composition and components thereof

• Main Authors: ORTOLANI, MATTEO, IZQUIERDO GARCIA, ALFONSO, TORRES SEBASTIAN, JORGE, ESCORZA MARQUEZ, ERICK ARTURO, BLANCAS GARCIA, VICTOR
• Format: Patent
• Language: Chinese; English
• Published: 16.03.2022
• Subjects: ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; PERFORMING OPERATIONS; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; VEHICLES IN GENERAL; VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR

A method of manufacturing tubing from a well-defined steel composition, in particular for a stored gas inflator pressure vessel, comprises the steps: (a) producing a steel tubing from a steel composition including at least one hot rolling or hot forming pass; (b) subjecting the steel tubing to a cold-drawing process to obtain desired dimensions, wherein the cold-drawing process comprises at least two pulls and before the final pull of the cold-drawing process an intermediate austenizing and quenching step; (c) subsequently performing a final recovery heat treatment on the cold-drawn steel tubing at a temperature in the range of 200 - 600 DEG C.