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Multi-Stage Stamping of High Strength Steel Wheel Disk

Tan, C.J., and Mori, K., and Abe, Y., (2007) Multi-Stage Stamping of High Strength Steel Wheel Disk. Journal of Advanced Manufacturing Technology, Vol. 1 (No. 1). pp. 31-47. ISSN 1985-3157

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Official URL: http://www.utem.edu.my

Affiliations

Toyohashi Univ. of Tech.. Dept. of Production System Engineering
Toyohashi Univ. of Tech.. Dept. of Production System Engineering
Toyohashi Univ. of Tech.. Dept. of Production System Engineering

Abstract

High strength steel blank with less blank thickness was employed in the multistage stamping of a wheel disk to obtain a reduction in weight. The increase in thickness at the inner corner of the high strength steel disk becomes small if compared to the mild steel disk for similar forming conditions. The small increase in thickness is mainly due to the decrease in blank thickness. Since
the fatigue strength of the disk sharply decreases even for a small decrease in thickness at the inner corner, a tailor blank with local thickening at the portion equivalent to the inner corner formed by stamping was employed in the multistage stamping to improve the increase in thickness at the inner corner. A tailor blank with an average increase in thickness of 8.2% at the equivalent portion was formed, and the wall thickness at the inner corner of the stamped disk was successfully increased by 14.5%.

Item Type:Journal
Keywords:FEM simulation, high strength steel, multi-stage stamping, reduction in weight, tailor blank, wheel disk.
Subjects:T Technology, Engineering
ID Code:7972

[1] Hibon, G., Marron, G., Patou, P., 1996, “Light car wheels in high strength steel”, Proc. 19th IDDRG, Eger, Hungary, pg. 33-46.

[2] Marron, G., Verrier, P., 1999, “A new concept for lighter steel wheels,” SAE Technical Papers SP-1439 , pg. 23-29.

[3] Luccioni, H., 1996, “Steel solutions for mass savings in the wheel industry,” La Revue de Métallurgie-CIT, pg. 851-859. [4] Kleiner, M., Geiger, M., Klaus, A., 2003, “Manufacturing of lightweight components by Metal Forming,” Annals of the CIRP 52 (2), pg. 521-542.

[5] Abe, Y., Mori, K., and Ebihara, O., 2002, “Optimization of the distribution of wall thickness in the multi-stage sheet metal forming of wheel disk,” Journal of Material

Processing Technology 125-126, pg. 792-797.

[6] Mori, K., Ebihara, O., Yoshii, K., Abe, Y., 2003, “Optimization of conditions in combined forming of deep drawing and ironing of disks using finite element

simulation,” Intelligence in a Material World, edited by J. A. Meech et al., pg. 305-313.

[7] Pollkotter, G., 1984, “CV road-wheel production from flat sheet,” Automotive Engineer February/March, pg. 50-52.

[8] Yogo, T., 1984, “Method for producing automobile wheel disk,” Japan Patent JP2004074248, (Japanese).

[9] Tan, C.T., Abe, Y., Mori, K., Ebihara, O., and Nonaka, T., 2007, “Increase of wall thickness around corner of multi-stage drawn cup with flange using conical punches,” Key Engineering Materials 340, pg. 761-766.

[10]Tan, C.T., Mori, K., Abe, Y., “Forming of tailor blanks having local thickening for control of wall thickness of stamped products,” Journal of Materials Processing

Technology. Accepted manuscript.

[11]Namoco Jr., C.S., Iizuka, T., Sagrado, R.C., Takakura, N., Yamaguchi, K., 2002, “Experimental and numerical investigation of restoration behavior of sheet metals

subjected to bulging deformation,” Journal of Materials Processing Technology 177 (1-3), pg. 368-372.

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