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HomeMaterials Science ForumMaterials Science Forum Vols. 539-543Estimation of Contact Interface between Tool and...

Estimation of Contact Interface between Tool and Workpiece in Cold Forming Using FEM Analysis

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Abstract:

The effect of the flow stress of solid lubricant for cold forging on the tribological conditions was investigated using a rigid-plastic finite element method. The thickness of lubricant film decreases with decreasing flow stress of the solid lubricant and then decreases rapidly. The apparent friction coefficient also decreases with the decrease in the flow stress of the solid lubricant. The thickness of lubricant film tends to decrease with decreasing friction shear factor. When flow stress of solid lubricant is low, the thickness of lubricant film decreases remarkably with increasing tool stroke. We can observe a good correlation between the flow stress of solid lubricant, friction shear factor, minimum film thickness and apparent friction coefficient.

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THERMEC 2006

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Periodical:

Materials Science Forum (Volumes 539-543)

Pages:

2275-2280

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.539-543.2275

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Online since:

March 2007

Authors:

Hiroyuki Saiki, Yasuo Marumo, Li Qun Ruan, Junpei Kozasa

Keywords:

Contact Condition, Flow Stress, Forging, Lubricant Film Thickness, Solid Lubricant, Tribology

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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