Machining method of stainless steel flange

The invention relates to a machining method of a stainless steel flange, and belongs to the technical field of flange machining. In order to solve the problems of poor low temperature resistance and crack resistance in the prior art, the invention provides a processing method of a stainless steel fl...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	FENG YUNKANG, FENG ZHENGRONG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ALLOYS CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL COMBINED OPERATIONS DIFFUSION TREATMENT OF METALLIC MATERIAL FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MACHINE TOOLS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS OTHER WORKING OF METAL PERFORMING OPERATIONS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS UNIVERSAL MACHINE TOOLS
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Beschreibung
Zusammenfassung:	The invention relates to a machining method of a stainless steel flange, and belongs to the technical field of flange machining. In order to solve the problems of poor low temperature resistance and crack resistance in the prior art, the invention provides a processing method of a stainless steel flange, which comprises the following steps: heating a stainless steel blank of a selected cut carbon manganese steel material in a heating furnace, so that the temperature of the blank is higher than the recrystallization temperature and lower than the solidus temperature; forging the heated blank for forging and forming, punching the stainless steel blank by using a punch, and rolling a ring to expand a central hole of the blank to obtain a flange blank; normalizing treatment is conducted at the temperature of 940-950 DEG C, cooling is conducted, and then heating is conducted for tempering treatment; turning and drilling are conducted, a semi-finished flange with the corresponding size is obtained, and then nitridi