ADHESION: AN IMPORTANT ASPECT OF LUBRICATION IN PLASTIC DEFORMATION PROCESSES
IR@IIP: CSIR-Indian Institute of Petroleum, Dehradun
View Archive Info| Field | Value | |
| Creator |
Shukla, B.M
Singhal, S |
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| Date |
2009-07-10T05:36:13Z
2009-07-10T05:36:13Z 2009-07-10T05:36:13Z |
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| Identifier |
http://hdl.handle.net/123456789/313
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| Description |
Lubricationin metalworkingprocesses is distinctivebecause of large scale defonnation of the work piece. The
defonnationgenerateshighlyadhesiveftesh virginsurfaces.The lubricantfilmprevailingin the contact zone thins down
andmayleadto metalcontactcausingadhesionand metaltransfer.The adhesionand metaltransferplaya dominantrole
on product surface quality and tool!die wear. It also binders the defonnation process due to stickingbetween the
interactingsurfaces.A good lubricantshouldminimizethe adhesionto improvethe product surfacequalityand the wear
oftool!die.
A labomtory study of adhesion under simulated plastic defonnation conditions on a modified Amsler Mction and wear
testing machine was carried out. The test disc pairs (EN31 and mild steel) were rotated in circumference contact with a
relative sliding of 10%. The applied load of 400N caused nonnal contact stresses of the order of 1.12 GPa much higher
than the yield strength (about O.6GPa)of mild steel which lead to plastic defonnation of mild steel. The worn sur&ces
and wear particles were examined for adhesive transfer and sticking by scanning electron microscope. It was observed
that the metal transfer was influenced by the natme of lubricants. The paper discusses the influence of additive on
adhesion and subsurface defonnation.
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| Language |
en_US
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| Subject |
Lubrication
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| Title |
ADHESION: AN IMPORTANT ASPECT OF LUBRICATION IN PLASTIC DEFORMATION PROCESSES
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| Type |
Article
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