Process for producing a high-grade steel tube and high-grade steel tube

The present invention relates to a process for producing a high-grade steel tube comprising the steps of providing a tubular blank of an austenitic high-grade steel, wherein the high-grade steel comprises carbon in a proportion of no more than 0.02% by weight, manganese in a proportion of no more th...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HEDVALL CHRISTOFER, G HRS JONAS, RAUFFMANN UDO, FROB SE THOMAS
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL BLASTING CHEMISTRY ENGINEERING ELEMENTS AND UNITS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS PIPES PUNCHING METAL SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	The present invention relates to a process for producing a high-grade steel tube comprising the steps of providing a tubular blank of an austenitic high-grade steel, wherein the high-grade steel comprises carbon in a proportion of no more than 0.02% by weight, manganese in a proportion of no more than 1.0% by weight, phosphorus in a proportion of no more than 0.03% by weight, sulfur in a proportion of no more than 0.015% by weight, silicon in a proportion of no more than 0.8% by weight, nickel in a proportion of 17.5% by weight to 18.5% by weight, chromium in a proportion of 19.5% by weight to 20.5% by weight, molybdenum in a proportion of 6.0% by weight to 6.5% by weight, nitrogen in a proportion of 0.18% by weight to 0.25% by weight and also copper in a proportion of 0.5% by weight to 1.0% by weight, with a remainder of iron and unavoidable impurities, and cold-forming the blank into a tube. In order to provide a corresponding process for producing a tube from an austenitic high-grade steel that allows the