Small billet forming of porous sintered copper sheet

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Published: Oct 7, 2018
Keywords:
Plastic forming powder metallurgy porous metal extrusion

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Y. Taniguchi
Department of Mechanical Engineering, National Institute of Technology, NARA College, 22‐Yata, Yamatokoriyama City, Nara, Japan, 6391080
H. Shimada
Department of Mechanical Engineering, National Institute of Technology, NARA College, 22‐Yata, Yamatokoriyama City, Nara, Japan, 6391080
M. Ozaki
Department of Mechanical Engineering, National Institute of Technology, NARA College, 22‐Yata, Yamatokoriyama City, Nara, Japan, 6391080
K. Kodama
Department of Mechanical Engineering, National Institute of Technology, NARA College, 22‐Yata, Yamatokoriyama City, Nara, Japan, 6391080

Abstract

This study aims at forming small billets on metal sheet which is fabricated as a porous blank by using powder metallurgy technique. Pure copper disc was fabricated in 50% porosity and used as specimen for small billet forming. Thickness of the sintered specimen is 2~3mm and small billet was extruded into die cavity by punch indentation at extrusion ratio 4. Diameter of the die is 1.0mm. As the results, In the case of same punch force, a billet height of porous specimen became longer than conventional pure copper. When specimens were extruded at the same punch stroke, porous specimen showed little shorter billet height than the conventional one due to occurrence of shrinkage, but its punch force became 33% lower. Billet height became more longer in case of thicker sintered specimen. It is concluded that the porous specimens is useful to forming a small or micro billet with lower punch force.

Article Details

How to Cite
Taniguchi, Y., Shimada, H., Ozaki, M., & Kodama, K. (2018). Small billet forming of porous sintered copper sheet. Journal of Research and Applications in Mechanical Engineering, 2(1), 34–41. Retrieved from https://ph01.tci-thaijo.org/index.php/jrame/article/view/149427
Issue
Vol. 2 No. 1 (2014)
Section
RESEARCH ARTICLES

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