Process for increasing the wall thickness in hollow sections

The invention relates to a process for producing a region of greater wall thickness in a longitudinal hollow section (1) which, to this end, is subjected to a radial and axial pressure and plastically deformed thereby. The hollow section (1) is secured in a matrix (2) corresponding to the section di...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: OSWALD JURGEN, HALDENWANGER HANS-G NTHER, WENZEL HOLGER, FISCHER FRANK
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:The invention relates to a process for producing a region of greater wall thickness in a longitudinal hollow section (1) which, to this end, is subjected to a radial and axial pressure and plastically deformed thereby. The hollow section (1) is secured in a matrix (2) corresponding to the section dimensions which has an enlarged cross section corresponding to the intended final dimensions of the hollow section (1) in the deformation region. The essential embodiment consists in that the deformation to attain an increased wall thickness (14) takes place in a region between the ends of the section. In addition, the wall thickness (19) can be increased at at least one of the ends of the section.