Multi-stage tube hydroforming process

Multi-stage tube hydroforming process

A method for hydroforming a tubular blank comprising the steps of at least partially closing the die portions of a die about a tubular blank, introducing a hydraulic fluid into the tubular blank at a first pressure, substantially closing the die portions about the tubular blank, partially opening th...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: CHRISTIANSON SCOTT, MASON MURRAY
Format: Patent
Sprache:eng
Schlagworte:
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
PERFORMING OPERATIONS
PUNCHING METAL
TRANSPORTING
WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:A method for hydroforming a tubular blank comprising the steps of at least partially closing the die portions of a die about a tubular blank, introducing a hydraulic fluid into the tubular blank at a first pressure, substantially closing the die portions about the tubular blank, partially opening the die while at least initially maintaining the pressure of the hydraulic fluid, and substantially closing the die portions at least a second time.