A new technology of sheet-metal flexible-die forming using a viscoplastic pressure-carrying medium

Mingwang Fu, Si Quang Lu, Mao Heng Huang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

12 Citations (Scopus)


The conventional pressure-carrying media of sheet-metal forming are solid materials (a rubber or polyurethane pad), liquid (oil and water) and gas (pressured air and expanding air). The various flexible-die forming methods using the above pressure-carrying media have a lot of different characteristics and have promoted the development of sheet metal forming technology. There are, however, a lot of disadvantages in using these pressure-carrying media. In order to explore a new pressure-carrying medium, numerous experiments have been undertaken, as a result of which a new type of pressure-carrying medium called a viscoplastic pressure-carrying medium (VPCM) has been synthesized. In this paper, a new kind of flexible-die forming technology using VPCM has been put forward and used to manufacture many different workpieces. The experimental results have shown that this kind of technology has a lot of advantages, such as a small drawing coefficient, good surface fineness, high dimensional-accuracy, and a simple and a general-service die structure. Moreover, This technology can also be used to manufacture complicated workpieces with a large degree of deformation or substantial local deformation. According to the practical uses of this technology, three sets of die are described also in this paper.
Original languageEnglish
Pages (from-to)359-367
Number of pages9
JournalJournal of Materials Processing Tech.
Issue number2-4
Publication statusPublished - 1 Jan 1995
Externally publishedYes

ASJC Scopus subject areas

  • Computer Science Applications
  • Industrial and Manufacturing Engineering
  • Ceramics and Composites
  • Metals and Alloys
  • Modelling and Simulation
  • Materials Science(all)


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