Formability pp 109-110 | Cite as

Appendix: Speed Effects of Lubrication

  • Wilko C. EmmensEmail author
Part of the SpringerBriefs in Applied Sciences and Technology book series (BRIEFSAPPLSCIENCES)


If in a practical forming operation lubrication is applied (as is most often), speed affects may be created by the lubricant. This is caused by the fact that movement of the sheet over the tool can generate a pressure in the lubricant by hydrodynamic effects. As a result the pressurized lubricant carries part of the load thereby reducing the load on the roughness asperities. This will reduce friction. Under ideal conditions the influence of speed on friction may be presented.


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    W. C. Emmens, G. Monfort, The influence of process conditions and surface characteristics on friction at low pressure. in Proceedings of the 3rd ICTP Congress, Kyoto, Japan, 1−6 July, 1277−1284Google Scholar
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    W. C. Emmens, Some frictional aspects of aluminium in deep drawing. in Proceedings of the 1st ICTMP Congress, Gifu, Japan, 19−23 October, 114−121Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg  2011

Authors and Affiliations

  1. 1.Construerende Technische Wetenschappen, Technische MechanicaUniversity of TwenteEnschedeThe Netherlands
  2. 2.Tata Steel RD&TIJmuiden The Netherlands

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