Method for the surface treatment of ferritic/martensitic 9-12% Cr steel

The present invention relates to a method for the surface treatment of ferritic/martensitic 9-12% Cr steel. The method is used for the purpose of achieving an improved oxidation behavior and increased resistance to solid particle erosion at application temperatures of above 500 DEG C, in particular...

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Bibliographische Detailangaben
Hauptverfasser:	KNOEDLER REINHARD, STRAUB STEFAN, SCARLIN RICHARD BRENDON
Format:	Patent
Sprache:	eng
Schlagworte:	ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GRINDING MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS POLISHING 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 TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	The present invention relates to a method for the surface treatment of ferritic/martensitic 9-12% Cr steel. The method is used for the purpose of achieving an improved oxidation behavior and increased resistance to solid particle erosion at application temperatures of above 500 DEG C, in particular around 650 DEG C., and includes, in a first step, a known shot peening of the surface of the steel with steel particles, and, subsequently, in a second step, shot peening with glass particles, optionally, in a following third step, the surface of the steel being smoothed. A subsequent additional heat treatment is unnecessary.