Details
| Original language | English |
|---|---|
| Pages (from-to) | 35-43 |
| Number of pages | 9 |
| Journal | Production Engineering |
| Volume | 12 |
| Issue number | 1 |
| Publication status | Published - 29 Dec 2017 |
| Externally published | Yes |
Abstract
To forge a flashless crankshaft within few steps and with low energy consumption innovative forging processes are necessary, such as cross wedge rolling and multi-directional forging. The direct combination of the two forming processes normally leads to flash at the bottom of the crankweb preform after the multi-directional forging. The reason for the flash generation is the rotation-symmetric cross wedge rolled billet, which is formed laterally to the main axis during multi-directional forging. In this paper, a parameter field in which flashless crankshaft preforms can be forged is presented. The parameters varied within the experimental research are the forming angle and the cross section area reduction at cross wedge rolling as well as the axis offset, the billet temperature and the forming velocity at the multi-directional forging. The limits of this flashless parameter field are shown in several diagrams. For a flashless combination of two forming process low values for all parameters such as a forming angle α = 30°, a cross section area reduction ΔA = 30%, and a billet temperature T = 1050 °C are recommended. Furthermore, the intensity of the influence of the significant parameters are shown. The cross section area reduction ΔA thereby caused the highest range at flash generation with 0.4 mm.
Keywords
- Crankshaft, Cross wedge rolling, Flashless, Multi-directional forging, Parameter study
ASJC Scopus subject areas
- Engineering(all)
- Mechanical Engineering
- Engineering(all)
- Industrial and Manufacturing Engineering
Sustainable Development Goals
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In: Production Engineering, Vol. 12, No. 1, 29.12.2017, p. 35-43.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Experimental investigation of different parameters at a combined cross wedge rolling and multi-directional forging process
AU - Rasche, Neelam
AU - Langner, Jan
AU - Stonis, Malte
AU - Behrens, Bernd Arno
N1 - Funding information: The authors thank the German Research Foundation (Deutsche Forschungsgemeinschaft ¬– DFG) for the funding of the research project “ProKomb – Prozesskombination des Querkeilwalzens mit der mehrdirektionalen Umformung” (DFG STO 1011/5?1). The authors declare that they have no conflict of interest.
PY - 2017/12/29
Y1 - 2017/12/29
N2 - To forge a flashless crankshaft within few steps and with low energy consumption innovative forging processes are necessary, such as cross wedge rolling and multi-directional forging. The direct combination of the two forming processes normally leads to flash at the bottom of the crankweb preform after the multi-directional forging. The reason for the flash generation is the rotation-symmetric cross wedge rolled billet, which is formed laterally to the main axis during multi-directional forging. In this paper, a parameter field in which flashless crankshaft preforms can be forged is presented. The parameters varied within the experimental research are the forming angle and the cross section area reduction at cross wedge rolling as well as the axis offset, the billet temperature and the forming velocity at the multi-directional forging. The limits of this flashless parameter field are shown in several diagrams. For a flashless combination of two forming process low values for all parameters such as a forming angle α = 30°, a cross section area reduction ΔA = 30%, and a billet temperature T = 1050 °C are recommended. Furthermore, the intensity of the influence of the significant parameters are shown. The cross section area reduction ΔA thereby caused the highest range at flash generation with 0.4 mm.
AB - To forge a flashless crankshaft within few steps and with low energy consumption innovative forging processes are necessary, such as cross wedge rolling and multi-directional forging. The direct combination of the two forming processes normally leads to flash at the bottom of the crankweb preform after the multi-directional forging. The reason for the flash generation is the rotation-symmetric cross wedge rolled billet, which is formed laterally to the main axis during multi-directional forging. In this paper, a parameter field in which flashless crankshaft preforms can be forged is presented. The parameters varied within the experimental research are the forming angle and the cross section area reduction at cross wedge rolling as well as the axis offset, the billet temperature and the forming velocity at the multi-directional forging. The limits of this flashless parameter field are shown in several diagrams. For a flashless combination of two forming process low values for all parameters such as a forming angle α = 30°, a cross section area reduction ΔA = 30%, and a billet temperature T = 1050 °C are recommended. Furthermore, the intensity of the influence of the significant parameters are shown. The cross section area reduction ΔA thereby caused the highest range at flash generation with 0.4 mm.
KW - Crankshaft
KW - Cross wedge rolling
KW - Flashless
KW - Multi-directional forging
KW - Parameter study
UR - http://www.scopus.com/inward/record.url?scp=85039715991&partnerID=8YFLogxK
U2 - 10.1007/s11740-017-0783-y
DO - 10.1007/s11740-017-0783-y
M3 - Article
AN - SCOPUS:85039715991
VL - 12
SP - 35
EP - 43
JO - Production Engineering
JF - Production Engineering
SN - 0944-6524
IS - 1
ER -