An empirical model for friction in cold forging

Niels Bay (Invited author), Morten Eriksen (Invited author), Xincai Tan (Invited author), Ole Wibom (Invited author)

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


    With a system of simulative tribology tests for cold forging the friction stress for aluminum, steel and stainless steel provided with typical lubricants for cold forging has been determined for varying normal pressure, surface expansion, sliding length and tool/work piece interface temperature. The results show, that friction is strongly influenced by normal pressure and tool/work piece interface temperature, whereas the other process parameters investigated show minor influence on friction. Based on the experimental results a mathematical model has been established for friction as a function of normal pressure and tool/work piece interface temperature. The model is verified by process testing measuring friction at varying reductions in cold forward rod extrusion. KEY WORDS: empirical friction model, cold forging, simulative friction tests.
    Original languageEnglish
    Title of host publicationProceed. Euromech 435 FWMF, Friction and wear in metal forming
    Place of PublicationValenciennes, France
    Publication date2002
    Publication statusPublished - 2002
    EventEuromech 435 : Friction and Wear in Metal Forming - Valenciennes, France
    Duration: 18 Jun 200220 Jun 2002


    ConferenceEuromech 435

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