Analysis of Ring Compression Test for Determination of Friction Circumstances in Forging Process

Mojtaba Dehghan; Fathallah Qods; Mahdi Gerdooei; Javad Doai

doi:10.4028/www.scientific.net/AMM.249-250.663

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 249-250Analysis of Ring Compression Test for...

Analysis of Ring Compression Test for Determination of Friction Circumstances in Forging Process

Abstract:

Friction is a major factor in determining the characteristics ofmetals as they are forged.Regularand efficient lubrication is one of the best ways in controlling friction and wear in this process.One of the best ways of testing the lubricant is the ringCompression test. In this research the effect of mixed graphite in water and also the effect of the amount of graphite in the lubricant in the reduction of friction between the sample-die are calculated using the ring test. Friction behavior is changed fromsticking friction to sliding frictionby using the lubricant; but the changes in the amount of graphite in water didnot have a great effect on the reduction of the friction coefficient. Furthermore, after viewing differences in the friction coefficients calculated by the means of FE analysis and the friction calibration curves, it is concluded that the sole calibration curves could not be used for hot working conditions.

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Periodical:

Applied Mechanics and Materials (Volumes 249-250)

Pages:

663-666

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.249-250.663

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Online since:

December 2012

Authors:

Mojtaba Dehghan, Fathallah Qods, Mahdi Gerdooei, Javad Doai

Keywords:

Forging, Friction, Friction Calibration Curves, Lubricant, Ring Compression Test

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