Struers TegraPol 21 Manuel D'instructions page 320

The TegraForce specimen mover
Mounting a specimen mover on the TegraPol is the first step
towards automatic preparation. The precise control of all
preparation parameters including the force is necessary to
ensure reproducible preparation results. This is only obtained
by electronic force control and, on TegraForce; the force on the
specimens can be exerted very precisely, and the advantages
are many:
- High reproducibility through precise control of preparation
parameters
- Preparation of single specimens with in dividual force
applied – flexibility is maintained and there is no need for
dummy specimens
Preparation of single specimens
When single specimens are inserted in a specimen mover
plate, the force is applied individually to each specimen. With
this outstanding feature there is no need for dummy speci-
mens. If your workflow demands short response-times you
will benefit greatly from the individually applied force and
maintain maximum flexibility. The preparation of individual
specimens starts with grinding using fine grain sizes. There is
no need for coarse pre-grinding since each specimen is lev-
elled and ground independently. Very low force (10 N) can be
applied on the individual specimen allowing for preparation of
very fragile materials.
TegraForce-1
TegraForce-1 is designed to be mounted on a TegraPol-11
or TegraPol–15 and is suitable for preparation of both single
specimens and specimens clamped in a specimen holder.
1, 2 or 3 specimens of up to 40 mm/1½" diameter can be fine
ground and polished individually. For high removal rate or
when plane grinding is required, the 120 mm diameter speci-
men holder where 3 specimens are prepared simultaneously is
used.
To avoid damage when the preparation is started, the speci-
men holder or the pressure feet are lowered at reduced force.
After a few seconds, the force applied to the specimens is
slowly raised to the pre-set value.
On TegraForce the force can be reduced automatically towards
the end of the preparation, resulting in lower material removal
and smaller scratches. This saves time on the following prepa-
ration steps, since the amount of deformation to be removed is
minimised.
TegraForce is equipped with LED illumination. While providing
extra light to the preparation area, LED's grant very long life-
time and minimum power consumption, making them most
environmentally-friendly.
Accessories
Struers offers a wide range of accessories to the TegraForce-1
specimen mover. For TegraForce-1 both specimen mover
plates and specimen holders are available, enabling the prepa-
ration of many different sizes and shapes of specimens.
For the manufacture of your own special specimen holder
designs, Struers can deliver specimen mover plates
without holes.
TegraForce-1
LED illumination