Influence of the forming angle in cross wedge rolling on the multi-directional forging of crankshafts

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autorschaft

  • Bernd Arno Behrens
  • Malte Stonis
  • Neelam Rasche

Externe Organisationen

  • Institut für integrierte Produktion Hannover (IPH) gGmbH
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Details

OriginalspracheEnglisch
Seiten (von - bis)31-41
Seitenumfang11
FachzeitschriftInternational Journal of Material Forming
Jahrgang11
Ausgabenummer1
Frühes Online-Datum19 Nov. 2016
PublikationsstatusVeröffentlicht - Jan. 2018

Abstract

In each industrial process for the production of crankshafts a low energy demand and a fast processing time are required. Crankshafts have a very complex geometry and are forged with a high percentage of flash compared to other forging parts. Recent research showed the feasibility of a flashless forging of crankshafts. One way to forge a flashless crankshaft within three steps is to use cross wedge rolling, multi-directional forging and final forging. This paper presents the investigation results regarding the influence of the forming angle α in cross wedge rolling on different parameters at multi-directional forging. First, the state of the art is presented. As a basis for the investigations the process development and tool design of cross wedge rolling and multi-directional forging are described. Afterwards the paper’s results regarding the influence of the forming angle α on flash generation, billet temperatures, forming degree, forming forces and effective strain will be presented as a parameter study. Generally, flash is generated because a rotation-symmetric billet is forced into an asymmetric movement. The influence of an increasing forming angle leads to a higher amount of flash at the bottom of the crankwebs.

ASJC Scopus Sachgebiete

Zitieren

Influence of the forming angle in cross wedge rolling on the multi-directional forging of crankshafts. / Behrens, Bernd Arno; Stonis, Malte; Rasche, Neelam.
in: International Journal of Material Forming, Jahrgang 11, Nr. 1, 01.2018, S. 31-41.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Behrens BA, Stonis M, Rasche N. Influence of the forming angle in cross wedge rolling on the multi-directional forging of crankshafts. International Journal of Material Forming. 2018 Jan;11(1):31-41. Epub 2016 Nov 19. doi: 10.1007/s12289-016-1326-3
Behrens, Bernd Arno ; Stonis, Malte ; Rasche, Neelam. / Influence of the forming angle in cross wedge rolling on the multi-directional forging of crankshafts. in: International Journal of Material Forming. 2018 ; Jahrgang 11, Nr. 1. S. 31-41.
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N2 - In each industrial process for the production of crankshafts a low energy demand and a fast processing time are required. Crankshafts have a very complex geometry and are forged with a high percentage of flash compared to other forging parts. Recent research showed the feasibility of a flashless forging of crankshafts. One way to forge a flashless crankshaft within three steps is to use cross wedge rolling, multi-directional forging and final forging. This paper presents the investigation results regarding the influence of the forming angle α in cross wedge rolling on different parameters at multi-directional forging. First, the state of the art is presented. As a basis for the investigations the process development and tool design of cross wedge rolling and multi-directional forging are described. Afterwards the paper’s results regarding the influence of the forming angle α on flash generation, billet temperatures, forming degree, forming forces and effective strain will be presented as a parameter study. Generally, flash is generated because a rotation-symmetric billet is forced into an asymmetric movement. The influence of an increasing forming angle leads to a higher amount of flash at the bottom of the crankwebs.

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