Finite Element Method Analysis of Densification Process of Sintered Steel for Automobile in Cold Forging

Yuki Morokuma, Yuichiro Kamakoshi, Shinichi Nishida and Ikuo Shohji
Additional contact information
Yuki Morokuma: Gunma University, Maebashi, Japan
Yuichiro Kamakoshi: Gunma Industrial Technology Center, Maebashi, Japan
Shinichi Nishida: Gunma University, Maebashi, Japan
Ikuo Shohji: Gunma University, Maebashi, Japan

International Journal of Technology and Engineering Studies, 2019, vol. 5, issue 1, 30-36

Abstract: The aim of this study is to clarify the effect of the process conditions such as dimensions of material and die, and applied stress on the density distribution in the sintered steel after cold forging by Finite Element Method (FEM) analysis. The analysis model was a porous material model with axial symmetry. A flow stress curve was calculated by a polynomial approximation technique for the true stress-true strain curve obtained by the compression test of the sintered cylindrical specimen. The FEM analysis of cold forging was conducted using a simplified circular cone shape model to increase local density and reduce the cold forging load. In the analysis, a closed die forging model was used. The tip angles of the circular cones and the opening angle of the die were 90, 60 degrees and 120 degrees, respectively. As a result, it was found that the relative density of the tip increases up to 550-600 MPa regardless of the tip angle. Furthermore, the sharper the tip angle, the higher the density enhancement in the tip neighborhood portion.

Keywords: Powder metallurgy; cold forging; densification; FEM (search for similar items in EconPapers)
Date: 2019
References: Add references at CitEc
Citations:

Downloads: (external link)
https://kkgpublications.com/technology-engineering-studies-volume-5-issue-1/ (application/pdf)
https://kkgpublications.com/wp-content/uploads/2020/10/ijtes.5.10005-1.pdf (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:apa:ijtess:2019:p:30-36

DOI: 10.20469/ijtes.5.10005-1

Access Statistics for this article

International Journal of Technology and Engineering Studies is currently edited by PROF.IR.DR.Mohid Jailani Mohd Nor

More articles in International Journal of Technology and Engineering Studies from PROF.IR.DR.Mohid Jailani Mohd Nor Calle Alarcon 66, Sant Adrian De Besos 08930, Barcelona Spain.
Bibliographic data for series maintained by PROF.IR.DR.Mohid Jailani Mohd Nor ().