Micro Cup Drawing without Wrinkles Using a Bulged Punch

Authors

  • Syamsul Hadi State Polytechnic of Malang
  • Anh Kiet Tieu University of Wollongong
  • Cheng Lu University of Wollongong
  • Hailiang Yu University of Wollongong
  • Alain Kusmoko University of Wollongong
  • Anggit Murdani State Polytechnic of Malang
  • Dianta Ginting Kyung Hee University

DOI:

https://doi.org/10.4186/ej.2021.25.12.51

Keywords:

wrinkle elimination, cup drawing, AA1235 foils, bulged punch, simulation

Abstract

A novel Bulged Punch (BP) was successfully performed for wrinkle elimination in micro cup drawings of AA1235 foils. BP was used to create a specific enlarged gradual punch profile before wrinkles began to occur until the end of the stroke, with fully annealing of AA1235 occurring before accumulative roll bonding (ARB), asymmetric rolling (AR), and stress relieving of a rolled blank, and deep drawing. The research purpose is to create a micro cup without wrinkles. The method was studied via experimentally deep drawing a blank thickness of 300 mm with pairs of dies-BPs supported by a press tool. Blanks were processed under (a) ARB 4 and 6 cycles, (b) combined ARB with AR and (c) post-heat-treatment. The process was selected when a force (F) from the simulation matched with the measured value. The results showed that BP can simultaneously eliminate the occurrence of wrinkles at the cup edge, reduce the earing occurrence, increase cup corner thickness, and decrease the edge thickness. Simulation models were built using the finite element method software LS Dyna, which supports experimental evidence. The findings imply that BP can successfully eliminate wrinkles at the cup edge.

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Author Biographies

Syamsul Hadi
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Department of Mechanical Engineering, State Polytechnic of Malang, Malang 65141, Indonesia

Anh Kiet Tieu
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School of Mechanical, Materials, Mechatronics, and Biomedical Engineering, University of Wollongong, Wollongong 2520, Australia

Cheng Lu
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School of Mechanical, Materials, Mechatronics, and Biomedical Engineering, University of Wollongong, Wollongong 2520, Australia

Hailiang Yu
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School of Mechanical, Materials, Mechatronics, and Biomedical Engineering, University of Wollongong, Wollongong 2520, Australia

Alain Kusmoko
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School of Mechanical, Materials, Mechatronics, and Biomedical Engineering, University of Wollongong, Wollongong 2520, Australia

Anggit Murdani
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Department of Mechanical Engineering, State Polytechnic of Malang, Malang 65141, Indonesia

Dianta Ginting
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Department of Applied Physics and Institute of Natural Sciences, Kyung Hee University, South Korea

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Published In
Vol 25 No 12, Dec 30, 2021
How to Cite
[1]
S. Hadi, “Micro Cup Drawing without Wrinkles Using a Bulged Punch”, Eng. J., vol. 25, no. 12, pp. 51-62, Dec. 2021.
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