A method for the simulation of temperature stabilisation during multi-cycle cold forging operations

Y Qin, R Balendra, K Chodnikiewicz

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Abstract

Previous analyses of material flow and temperature history during cold forging mostly referred to a particular manufacturing cycle of the forging; temperature changes in the tools with the number of manufacturing cycle were not examined. Repeating full-scale, coupled thermo-mechanical plastic-flow simulation to effect the analysis of temperature changes during multi-cycle operations is impracticable. An alternative strategy was, therefore, used for developing a simplified procedure to effect the analysis. The approach was to combine coupled thermo-mechanical FE plastic simulation and heat transfer analysis to define heat-flux-density functions across die/workpiece interfaces. The functions were then used for initiating heat transfer analysis on the die with the repeated heat-loading for the given cycles. Since only heat transfer analysis was required for the die for the multi-cycle analysis, high-efficiency of the computation was achieved.
Original languageEnglish
Pages (from-to)252-259
Number of pages8
JournalJournal of Materials Processing Technology
Volume107
Issue number1-3
DOIs
Publication statusPublished - 22 Nov 2000

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Keywords

  • cold forging
  • temperature
  • FE simulation
  • heat transfer analysis
  • heat-flux-density functions

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