Abstract: Based on the scuffing
experiments of sliding lubricated line contacts, a new scuffing
model based on the surface plastic flow has been formulated in
this paper. This model hypothesizes that all boundary films
(including oxide film) on the surfaces will be breakdown and
scuffing failure will occur when the plastic flow on one of the
surface lubricated with non-additive mineral oils comes out. For
the friction pairs which are made of GCr15 Steel, Seizure will
occur when the ratio of the yield area on the surface to the
real contact area reaches 50%. This model can explain the
scuffing behavior well and completely. Using the model, the
critical scuffing loads have been calculated. The results are in
good agreement with experimental data.
Key words:
Line contact Friction pair Scuffing
mechanism
Manuscript received on June
15, 1992
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