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Characteristics of tool wear in a combined double cup extrusion process

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Abstract

This paper is to investigate the wear characteristics of a tool in a double cup extrusion process (DCEP). The main objective of this study is to examine the influence of geometrical process parameters on the tool wear characteristics in DCEP. Two major design factors include the reduction in area in backward direction (RAB) and the wall thickness ratio of extruded can (TR). In order to verify the applicability of Archard’s wear model to massive deformation such as metal forming processes, two cases of experimental observations were compared with numerical predictions. A sequential operation has been also simulated to compare the tool wear with those in a combined operation. The simulation results were summarized quantitatively in terms of wear profiles such as contact pressure, sliding distance, and wear depth. It can be concluded from the results that severe wear occurs in regions near the punch or mandrel corner and the wear depth increases as the TR increases. This trend is intensified with increase in RAB.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Inha University, 253 Yong Hyun-Dong, Nam-Ku, Inchon, 402-751, Korea

    Jeong Hoon Noh & Beong Bok Hwang

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  1. Jeong Hoon Noh
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  2. Beong Bok Hwang
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Correspondence to Beong Bok Hwang.

Additional information

Recommended by Associate Editor Dae-Cheol Ko

Beong Bok Hwang received his B.S. degree in Mechanical Engi-neering from Inha University, Incheon, Korea, in 1981. He re-ceived his M.S. and then Ph.D. degrees from Univ. of Michigan, Ann Arbor and U.C. Berkeley in 1985 and 1991, respectively. Dr. Hwang is currently a Professor at the School of Mechanical Engineering at Inha University in Incheon, Korea. Dr. Hwang’s research interests include metal forming process.

Jeong Hoon Noh received his B.S. degree in Mechanical Engineering from Inha University, Incheon, Korea, in 2008. He received his M.E. degree from Inha University in 2010. Mr. Noh is currently a Ph.D. candidate at the Department of Mechanical Engineering at Inha University in Incheon, Korea.

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Noh, J.H., Hwang, B.B. Characteristics of tool wear in a combined double cup extrusion process. J Mech Sci Technol 29, 375–386 (2015). https://doi.org/10.1007/s12206-014-1137-8

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  • DOI: https://doi.org/10.1007/s12206-014-1137-8

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