Details
| Original language | English |
|---|---|
| Pages (from-to) | 31-41 |
| Number of pages | 11 |
| Journal | International Journal of Material Forming |
| Volume | 11 |
| Issue number | 1 |
| Early online date | 19 Nov 2016 |
| Publication status | Published - 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.
Keywords
- Crankshaft, Cross wedge rolling, Forming angle, Multi-directional forging, Parameter study
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
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In: International Journal of Material Forming, Vol. 11, No. 1, 01.2018, p. 31-41.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Influence of the forming angle in cross wedge rolling on the multi-directional forging of crankshafts
AU - Behrens, Bernd Arno
AU - Stonis, Malte
AU - Rasche, Neelam
N1 - Publisher Copyright: © Springer-Verlag France 2016. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2018/1
Y1 - 2018/1
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.
AB - 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.
KW - Crankshaft
KW - Cross wedge rolling
KW - Forming angle
KW - Multi-directional forging
KW - Parameter study
UR - http://www.scopus.com/inward/record.url?scp=85047608692&partnerID=8YFLogxK
U2 - 10.1007/s12289-016-1326-3
DO - 10.1007/s12289-016-1326-3
M3 - Article
AN - SCOPUS:85047608692
VL - 11
SP - 31
EP - 41
JO - International Journal of Material Forming
JF - International Journal of Material Forming
SN - 1960-6206
IS - 1
ER -