METHOD FOR HEAT-TREATING WELDING PARTS OF SUPERDUPLEX STAINLESS STEEL

PURPOSE: A heat treatment method of a super-duplex stainless steel weld zone is provided to improve corrosion resistance and impact toughness of the welded portion of a super-duplex stainless steel by preventing the precipitation of Cr nitride while cooling. CONSTITUTION: A heat treatment method of...

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Bibliographische Detailangaben
Hauptverfasser:	AHN, SANG KON, SON, WON QEUN
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	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 TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	PURPOSE: A heat treatment method of a super-duplex stainless steel weld zone is provided to improve corrosion resistance and impact toughness of the welded portion of a super-duplex stainless steel by preventing the precipitation of Cr nitride while cooling. CONSTITUTION: A heat treatment method of a super-duplex stainless steel weld zone is as follows. The super-duplex stainless steel including a welded portion is heated to the 1150°C in a furnace and kept in the state of 1150°C during ten minutes. The heated super-duplex stainless steel including a welded portion is water-cooled to normal temperature.