Prediction of Multipreform Shapes in Warm Forming with Experimental Verification

T. F. Kong, Luen Chow Chan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

1 Citation (Scopus)


This study uses a computer-aided simulation approach to predict the multipreform shapes of warm-forming intricate components. Nearly 100% of the scraps of primary hollow preforms are used to make secondary hollow preforms. This study simultaneously fabricates the AISI 316L stainless steel watch bezel by using scraps from the corresponding watch case. The appropriate preforms are designed with the aid of computer simulation such that die filling is completed, flash is reduced, and forming load is decreased. The specimens were prepared by custom-made tooling to verify the simulation results. Furthermore, the forming facilities are specially configured to carry out the physical experiments. Engineers eventually gain a better understanding of the warm-forming process using computer simulation. Moreover, they are able to design accurate preforms and fully utilize the material, which leads to a 50% improvement of the material utilization rate. The full material utilization also saves 40% and 20% of the total production cost and time, respectively.
Original languageEnglish
Pages (from-to)436-449
Number of pages14
Issue number2
Publication statusPublished - 1 Feb 2015

ASJC Scopus subject areas

  • General Materials Science
  • General Engineering


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