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Examination of tailored preforms produced by rotary swaging for subsequent hydroforming

Groche, Peter and Vogler, Falko and Wießner, Lennart (2015):
Examination of tailored preforms produced by rotary swaging for subsequent hydroforming.
In: Production Engineering, Research and Development, Springer-Verlag, Heidelberg, pp. 585-591, 9, [Article]

Abstract

Components with large cross section differences and complex geometries are not or only hardly produceable using conventional hydroforming processes at room temperature. In order to overcome this difficulty, the combination with other forming processes is promising. In the present paper a process chain consisting of rotary swaging followed by a subsequent hydroforming is examined. Local material data such as flow stress and forming limits of the preform are characterized. Kinematic hardening is found out to be the predominant material behavior. Hence, appropriate control curves for hydroforming were designed via locally assigned material data in numerical simulations. A complex geometry is thus formed with the presented process chain. It is shown that high forming ratios of preformed areas are achievable when compressive stress is superimposed by axial feeding.

Item Type: Article
Erschienen: 2015
Creators: Groche, Peter and Vogler, Falko and Wießner, Lennart
Title: Examination of tailored preforms produced by rotary swaging for subsequent hydroforming
Language: English
Abstract:

Components with large cross section differences and complex geometries are not or only hardly produceable using conventional hydroforming processes at room temperature. In order to overcome this difficulty, the combination with other forming processes is promising. In the present paper a process chain consisting of rotary swaging followed by a subsequent hydroforming is examined. Local material data such as flow stress and forming limits of the preform are characterized. Kinematic hardening is found out to be the predominant material behavior. Hence, appropriate control curves for hydroforming were designed via locally assigned material data in numerical simulations. A complex geometry is thus formed with the presented process chain. It is shown that high forming ratios of preformed areas are achievable when compressive stress is superimposed by axial feeding.

Journal or Publication Title: Production Engineering, Research and Development
Volume: 9
Publisher: Springer-Verlag, Heidelberg
Uncontrolled Keywords: Material characterization, Rotary Swaging, Hydroforming, Multi-stage forming-process
Divisions: 16 Department of Mechanical Engineering
16 Department of Mechanical Engineering > Institut für Produktionstechnik und Umformmaschinen (PtU)
Date Deposited: 29 Jan 2016 13:20
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