Process for making bellows from metal alloys

The invention relates to the technology of making thin-walled flexible sensors. The process comprises rolling out a tubular blank for the purpose of reducing its wall thickness with spatial deformation, heating of the rolled-out tubular blank to a temperature higher than the recrystallisation temper...

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Bibliographische Detailangaben
Hauptverfasser:	P. MINCENKOV,JURIJ, V. CERNIKOVA,ALLA, R. KUSELMAN,MARGARITA, A. ASTAPCIK,STANISLAV, S. ZINKEVIC,OLEG, N. BODJAKO,MICHAIL, M. JEDLINSKAJA,ZOJA, P. BOZOK,VIKTOR, M. KASULIN,SERGEI, M. ROZENBERG,VLADIMIR, V. KRYLOV-OLEFIRENKO,VIKTOR, P. ALEKSEEV,GENNADIJ, P. GONCAROV,MICHAIL, M. FURSOVA,LJUDMILA
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS 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:	The invention relates to the technology of making thin-walled flexible sensors. The process comprises rolling out a tubular blank for the purpose of reducing its wall thickness with spatial deformation, heating of the rolled-out tubular blank to a temperature higher than the recrystallisation temperature of the alloy, and subsequent cooling. This is followed by local transverse deformation of the walls of the tubular blank to form annular grooves and to shape the folds by plastic deformation of the tubular blank while it is being compressed in the axial direction, and generating a positive pressure in its interior. The blank which then contains the folds is heated to a temperature of the maximum precipitation rate of finely disperse alloy phases and left at this temperature. The rolled-out tubular blank is heated, according to the invention, by means of electric current at a heating rate of 100 to 800 DEG C/second. The blank containing folds is heated by means of electric current at a heating rate of 25 to 100 DEG C/second to the temperature of the maximum precipitation rate of finely disperse alloy phases and left at this temperature for 0.5 to 120 minutes. The invention can be applied particularly successfully in the construction of equipment.