Stihl Cutquik TS 700 Safety Manual page 24

Undercut
Undercutting is a wearing away of the
steel core at or just below the diamond
segments. When cutting road surfaces,
do not cut through into the more
abrasive ballast (gravel, crushed rock)
below, as indicated by a light colored
dust. This can cause excessive
undercutting, resulting in wheel
breakage and/or thrown segments.
!
Warning!
Immediately replace a diamond wheel if
the core has been severely undercut
Cut-off-Machine Safety Manual
Built-up edges, dressing
Built-up edges are identified by a pale
grey deposit on the top of the diamond
segments that clogs and blunts the
segments.
Built-up edges can form:
– when cutting extremely hard
material, such as granite,
– as a result of incorrect handling,
such as applying excessive feed
force,
– if extremely large sections are cut
without a pendulum movement
(back and forth in the cutting plane).
Built-up edges increase vibrations,
reduce cutting performance and cause
sparking.
Diamond cutting wheels must be
"dressed" at the first sign of built-up
edges. For this purpose, briefly cut a
more abrasive material, such as
sandstone, aerated concrete or asphalt.
Wet cutting helps to prevent the
formation of built-up edges.
If you continue to use a cutting wheel
with blunt segments, the segments may
soften as a result of excessive heat built
up. The wheel core will also overheat
and lose its mechanical strength. This
can lead to considerable stress, as
clearly indicated by stress cracks and/or
a wobbling movement of the cutting
wheel.
!
Warning!
Such cutting wheels may break apart or
throw off segments during use, causing
serious or fatal injury. Replace them
immediately.
English
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