Residual Stresses due to Deep-Drawing of Pre-Coated Aluminum-Alloy Sheets


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In this study, we examined how the press formability of A1 alloys sheets and the generation of residual stresses was influenced by pre-coating resins, lubricants, die shoulder radius, the punch shoulder radius, and so on. The use of a pre-coated layer offers advantages by preventing direct contact between sheet metal and the face of the die, and also by enabling the use of volatile oil lubricants that keep the factory environment cleaner. The circumferential residual stress (σC ) of a cup becomes lower when the lubricant is less effective, and when the die shoulder radius is smaller.



Materials Science Forum (Volumes 490-491)

Edited by:

Sabine Denis, Takao Hanabusa, Bob Baoping He, Eric Mittemeijer, JunMa Nan, Ismail Cevdet Noyan, Berthold Scholtes, Keisuke Tanaka, KeWei Xu




M. Sudo et al., "Residual Stresses due to Deep-Drawing of Pre-Coated Aluminum-Alloy Sheets", Materials Science Forum, Vols. 490-491, pp. 358-363, 2005

Online since:

July 2005




[1] T. Machida (1995), Press Technology (in Japanese) Vol. 33, No. 1 pp.18-27.

[2] M. Sudo et al, (1997), Proceeding of the fifth international conference on residual stresses, Sweden, pp.361-366.

[3] M. Sudo, T. Oki, and Z. Shibata; Tetsu-to-Hagane (Journal of iron and steel institute of Japan), vol. 78 (1992), p.624.

[4] Y. Osawa et al (1999), Data book on the press -formability of pre-coated Aluminum alloy sheets, the Japan Institute of Light Metals, Tokyo, p.105.

[5] Y. Shimazaki and K. Saito; Sosei-to-Kako (Journal of the Japan society for technology of plasticity) vol. 21 (1980), p.46.