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Small billet forming of porous sintered copper sheet |
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| รหัสดีโอไอ | |
| Creator | Y. TANIGUCHI, H. SHIMADA, M. OZAKI and K. KODAMA |
| Title | Small billet forming of porous sintered copper sheet |
| Publisher | Thai Society of Mechanical Engineers |
| Publication Year | 2557 |
| Journal Title | Journal of Research and Applications in Mechanical Engineering |
| Journal Vol. | 2 |
| Journal No. | 1 |
| Page no. | 34-41 |
| Keyword | Plastic forming, powder metallurgy, porous metal, extrusion |
| ISSN | 2229-2152 |
| 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. |
