Method for cannon barrel autofrettage

The invention refers to a method for cannon barrel autofrettage, which leads to the canon barrels' increased resistance to internal pressure, due to their plastic and elastic deformation by means of a disruptive explosive. The method uses the energy stored in disruptive explosives and consists...

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Bibliographische Detailangaben
Hauptverfasser:	GHIZDAVU VICTOR, BALOGH PETRU
Format:	Patent
Sprache:	eng ; rum
Schlagworte:	FOR PERFORMING MECHANICAL WORK IN GENERAL GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICALVIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY PERFORMING OPERATIONS TRANSPORTING
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Beschreibung
Zusammenfassung:	The invention refers to a method for cannon barrel autofrettage, which leads to the canon barrels' increased resistance to internal pressure, due to their plastic and elastic deformation by means of a disruptive explosive. The method uses the energy stored in disruptive explosives and consists of the insertion of a powder explosive (9), located in a non-metallic envelope (8), inside a barrel (1) subject to autofrettage. and the use of water as a transmission medium (11) for shock-waves. In order to achieve the desired autofrettage coefficient, and also taking into account the geometry of the cannon barrel, the density of the explosive load of the envelope (8) is modified. Also, in order to eliminate the end effect, it is necessary to use two cylindrical extensions, a higher (2) and an upper (3) one.