Development of Cup Inner Surface Smoothing Process by Ironing

Abstract:

Ironing process is a normal method to improve the surface quality and thickness precision of a drawn cup. Multi-stage processes that combined drawing and ironing, have been developed to obtain the cups with a each surface quality. However, the ironing process is generally used to outside of the drawn cup, and the trial to improve the inside surface property is not carried out very much. The purpose of this study is to clarify the effect of ironing process on the improvement of the surface quality of multi-stage drawn cup. The effects of the ironing reduction, lubricants and punch shape on the improvement of the inner surface properties are investigated by using a series of experiment. It is found that the inner ironing process is effective to improve the inner surface properties of a drawn cup.

• Periodical: Key Engineering Materials (Volumes 535-536)
• Pages: 263-266
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.535-536.263
• Online since: January 2013
• Authors: Atsushi Tanaka, Zhi Gang Wang, Nobuyuki Hibi
• Keywords: Drawn Cup, Ironing, Lubrication, Plastic Forming, Surface Roughness (SR)

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