Effect of sheet thickness on deep drawing of metal foils

• Autorzy: Marumo Y. , Saiki H. , Ruan L.
• Konferencja: 12th International Scientific Conference CAM3S'2006, 27-30th November 2006, Gliwice-Zakopane
• Języki publikacji: EN

Abstrakty

EN

Purpose: The objective of the present work is to study the influence of sheet thickness on blank holding force and limiting drawing ratio. Design/methodology/approach: Variation in blankholding force and limiting drawing ratio in deep drawing of metal foils were evaluated by calculation. Findings: The paper shows variation in the blankholding force required for the elimination of wrinkling and the limiting drawing ratio with sheet thickness. The blankholding force required for the elimination of wrinkling increased rapidly as the sheet thickness decreased. When the sheet thickness was very thin, the blankholding force was strongly influenced by the coefficient of friction. The limiting drawing ratio decreased as sheet thickness decreased and it decreased rapidly below 0.04 mm thickness. When the sheet thickness was very thin, the limiting drawing ratio was strongly influenced by the coefficient of friction. Research limitations/implications: The control of the loading path of blankholding force will be an effective way to prevent the formation of defects including fractures and wrinkles in deep drawing of metal foils. Practical implications: When deep drawing of metal foils is carried out, the control of loading path of blankholding force during deep drawing operation can be very effective for improving the limiting drawing ratio. Originality/value: The contribution of the conducted reseach is observed in a possible view of improvement of deep drawability of metal foils.

Słowa kluczowe

EN

plastic forming; deep drawing; metal foils; sheet thickness

PL

obróbka plastyczna; tłoczenie głębokie; folia metalowa; grubość blachy

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2007
• Tom: Vol. 20, nr 1-2
• Strony: 479--482
• Opis fizyczny: Bibligr. 21 poz., rys.

Twórcy

autor

Marumo Y.

autor

Saiki H.

autor

Ruan L.

• Department of Mechanical Systems Engineering, Kumamoto University, 2-39-1, Kurokami Kumamoto, 860-8555, Japan,

Bibliografia

• [1] M. Geiger, M. Kleiner, R. Eckstein, N. Tiesler, and U. Engel, Microforming, Ann. CIRP, 50-1 (2001) 1-18.
• [2] K. Yamaguchi, N. Takakura, T. Fukiage, and M. Fukuda, An experimental study of the size and shape of tension specimens for aluminum foil, Journal of the Japan Society for Technology of Plasticity, 17-191 (1976) 995-1002.
• [3] M. Saito, H. Saiki, and N. Kawai, Experimental analysis of ironing of thin metal cups, Trans, of ASME, Journal of Engineering for Industry, 111 (1989) 56-63.
• [4] Y. Kurosaki, H. Takeuchi, and K. Murai, Yield stress and fracture behavior of electronic copper foils, Transactions of the Japan Society of Mechanical Engineers, 58-550 (1992) 313-318.
• [5] W.B. Lee, C.F. Cheun, L.K. Chan, W.M. Chiu, An investigation of process parameters in the dam-bar cutting of integrated circuit packages, Journal Materials Processing Technology, 66 (1997) 63-72.
• [6] I. Aoki, T. Yano and T. Higuchi, Development of a piezoelectric micropress and its application to press blanking, Journal of Japan Society for Precision Engineering, 58-2 (1992) 131-136.
• [7] F. Vollersten, I. Komel, and R. Kals, The laser bending of steel foils for microparts by the buckling mechanism – A model, modelling simulation, Mater.Sci.Eng., 3 (1992) 107-119.
• [8] C.L. Yau, K.C. Chan, and W.B. Lee, Laser bending of leadframe materials, Journal of Materials Processing Technology, 82 (1998) 117-121.
• [9] Y. Saotome, and T. Okamoto, An in-situ incremental microforming system for three-dimensional shell structures of foil materials, Journal of Materials Processing Technology, 113 (2001) 636-640.
• [10] S. Tanaka, T. Nakamura, and K. Hayakawa, Miniature incremental forming of millimeter-sized tin shell structures, Advanced Technology of Plasticity 2002, 1 (2002) 38-42.
• [11] S. Suto, K. Katsuno and T. Sano, and K. Matsui, Bending of amorphous alloys, Journal of Materials Processing Technology, 33-3 (1992) 215-227.
• [12] Y. Saotome and T. Okamoto, Microdeep drawability of very thin sheet steels, Journal of Materials Processing Technology, 113 (2001) 641-647.
• [13] Y. Okazaki and K. Kawaguchi, Ultrasonic deep drawing of aluminum foil, Advanced Technology of Plasticity 1990, 3 (1990) 1333-1340.
• [14] S. Kurimoto, K. Hirota, Y. Nakano, and T. Mori, Improvement of ultra-fine piercing by means of vacuum system, Advanced Technology of Plasticity 2002, 1 (2002) 391-396.
• [15] M.A. Hassan, N. Takakura and K. Yamaguchi, Friction aided deep drawing of sheet metals using polyurethane ring and auxiliary metal punch, International Journal of Machine Tools & Manufacture, 42 (2002) 625-631.
• [16] Y. Kasuga, Deep drawing of ultra thin aluminium sheet with use of piezoelectric actuator, Journal of the Japan Society for Precision Engineering, 62-12 (1996) 1737-1741.
• [17] M. Otsu, T. Wada, and K. Osakada, Micro-bending of thin spring by laser forming and spark forming, CIRP Ann., 50-1 (2001) 141-144.
• [18] Y. Marumo, H. Saiki, and A. Onoue, Effect of lap-sheets on deep drawing of metallic foil cups Journal of Materials Processing Technology, 119 (2001) 48-51.
• [19] Y. Marumo, H. Saiki, L. Ruan, K. Hokamoto, S. Itoh and H. Iyama, Piercing process of very thin sheet metal using explosive-impulsive pressure, Materials Science Forum, 465-466 (2004) 337-342.
• [20] N. Kawai, Critical conditions of wrinkling in deep drawing of sheet metals, Transactions of the Japan Society of Mechanical Engineers, 26-166 (1960) 857-863.
• [21] E. Siebel, H. Beisswanger, Tiefziehen, Carl Hanser Verlag, 1955.