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BAQ kaloMAX NT II
4.1
Analysis by surface profiler
For an analysis by a surface profiler (determination
of the depth of the wear crater), the scan should be
taken at right angle to the grinding direction and
along the centre line (deepest point of the wear
crater). See figure.
4.2
Calculation of the wear coefficient
For the calculation of the wear volume, an ideal spherical cap is assumed. The crater
i.e. wear volume (Vv) can be calculated as follows:
( 1 )
Then the wear coefficient (Vr) can be determined:
( 2 )
The grinding path (s) can be calculated from the periphery of the ball and the number
of ball revolutions n.
( 3 )
V
2
v
=
h
3
Wear volume
V
=
r
Sliding distance∗Bearing strength
= s
2
Stylus
Drawing 1: Analysis of a wear
crater by a surface profiler
(3
r
-
h)
where:
V
= Wear volume [m
v
h
= Crater depth [m]
r
= Ball radius [m]
r
n
Manual
Grinding
direction
Wear
crater
3
]
Page 13
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