Reference Guide; Hints; Hardening; Gluing - struers Epovac Gebrauchsanweisung

Hints

Hardening

Gluing

6
Epovac
Instruction Manual

3. Reference Guide

If 2 or 3 component resins like Epofix are used, it is important that
the resin is not heated in order to obtain quicker hardening. The resin
will quickly become highly viscous that results in poor impregnation.
Avoid using larger quantities of embedding material than about 20 ml
as the heat generation then may become too large with a bad
impregnation as a result.
At too high vacuum some of the components in the epoxy evaporate
and it looks as if it boils. This can be avoided by reducing the
vacuum with the valve.
If Epovac is not going to be used anymore the same day, the
specimens can remain in the apparatus for hardening. When the
specimens have hardened, the impregnation hose can also be re-
moved without any risk of leaving resin on the hose clamp or in the
pivot joint.
If the apparatus is going to be used again, the hose with rubber plug
is removed from the cover. Keep the rubber plug, as it can be used
again. Take care not to spill impregnation liquid on the pivot joint or
the hose clip, especially if it is a 2- or 3-component liquid which
hardens.
Any spilled impregnation liquid must be removed at once with a
suitable detergent.
Apply a suitable amount of resin to the specimen. Usually one
drop is enough.
Place the specimen with the glued surface up, and place a glass
slide upon the specimen.
Mount the pressure rod with rubber plug in the pivot joint of the
lid.
Start the vacuum pump, open the compressed air, and set the
vacuum valve to max.
Place the pressure rod on the glass slide and rub. When the
specimen is firmly stuck to the slide, set the vacuum valve to
min.
Remove the slide with glued sample.